Mfc100u.dll is missing

I installed a program called Tobii Communicator in a laptop that worked fine and when i installed it in a ASUS tablet i got the message mfc100u.dll is missing. I search for visual studio (mfc100u is a part in visual studio i think) in store and find it on the laptop but not on the tablet? then i tried to do other search both on the tablet and the laptop and got different resaults. I want to now if there is a sollotion for the mfc100u.dll-file or is it some hardware issue that make it not work on a tablet.

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Hello there,

Used as per "Windows 7 for Dummies" to clean up some unwanted trialware and now when I log on I get a "mwlDaemon.exe - System Error" box.

It tells me that "sysenv.dll is missing. Try re-installing the program to fix the problem."

I am very much a novice with a computer and am unsure as to what is my next step?

Any ideas?


After installing a game when , i want to start that application , i get n error D3DX9_42.DLL file is missing from my computer...

i dont know what to do?
due to this error i am not able to play any game on my system..

please guide me through this..

I have a HP touchsmart 600-1370a 64 bit with Win 7 premium installed. I used to run Photoshop CS3 and Photoshop CS6 no problems (both 32bit and 64 bits were installed upon initial installation). Recently my graphic driver was replaced by a HP authorised repairer and as they had problems with the touchscreen they restored my system to factory standard.
I then had to reinstall my programs but now on opening CS3 I get this error:
The program can't start becasue dbghelp-xfw.dll is missing from your computer. Try reinstalling the program to fix this problem.
I dont get the error when I open CS6.
I searched my system files and could not locate the missing dbghelp-zfw.dll but just found dbghelp.dll in various locations
Any thoughts?

After using GPart to set up two partitions and installing Windows 7 RC1 everything works well in 7. However, when I attempt boot to XP I get the following error, "(windows root)system32hall.dll is missing or corrupt." and the system halts. My research indicates this may be a problem with the XP boot.ini file but I'm unable to edit the file. If I attempt to boot to an XP CD to get at recovery consle the boot cd does not see any hard drives attached. I'm fresh out of ideas??


I just started receiving an error message when I open Google Chrome. The message states that the application failed to start because nspr4.dll is missing, then Chrome starts anyway. nspr4.dll is the Netscape Portable Runtime, so I assume it must be used somehow for compatibility within the program and that the only thing not started is this compatibility function.

I searched for the error message in Google and found a workaround in a thread on Chrome's help forum, but it doesn't explain why it happens.

The fix is to copy nspr4.dll from Program Files>Firefox> to the Windows>system32 directory. (Alternately some copied it to ProgramFiles>Chrome)

Some other answers in the thread stated that after doing this, a new message popped up saying a couple of other dll's were missing, all were found in the Program Files>Firefox directory. Copying them to system32 fixed all of the machines.

Since this seems to be a common problem I was surprised there was no direct answer on the Google Chrome Help site, but just a thread from users in the forum.

Hello. I have been working on this off and on since New Year's Eve and I'm in over my head. I am working on my nephew's computer. The problem started with a loop documented by Microsoft The short explanation is a window comes up saying that Windows needs to be activated, I choose yes, it tells me it's already activated and logs me out. Need to boot into safe mode to fix and was unable to.

Put IDE hard drive in another computer and reformatted for a clean reinstall. New error time! NTDLR is missing. Been doing research on that and have a couple of good sources; just having troubles applying the suggestions. and

The current problems are: I made the bootable disk from the first reference above, the CD boots and the list of options to try comes up. Unfortunately, I need to use the up and down arrow keys to navigate the list and the keyboard (working fine before/even swapped with another to test) does not work. Unplugging computer and replugging it in used to solve the problem; now it doesn't. I am not even sure if this procedure is for a reformatted HD; there is no OS on this computer! When it tries the first fix (automatically, that is the only reason it works) I get the error: Windows could not install because the following file is missing or corrupt. system32hal.dll. Please reinstall a copy of the above file. So now I can't go any further with this repair option.
The second reference, towards the bottom, addresses the issue of the computer not booting from the XP CD; this person was able to use a Windows98 CD to boot. I have a Windows95 CD but that won't work either; I still get the NTLDR is missing error.
Please, please help. I am and
As always, I appreciate all of you and your assistance.
BTW: I have checked the IDE cables, the CD drive is fine - I've checked and rechecked the hardware for what it is worth!


My Outlook 2010 (Win 7 32 bitS ) is not starting because a System Error msg tells me that a MSVCR90.dll is missing.

How can I solve the problem, and what's the reason for the missing dll?

Any help will be much appreciated.


Since I have done the reinstall of everything I get the message "mtdsdk.dll file missing". I have googled it and all I could come up with are companies wanted to scan my drive and tell me what my problem was, but had no solutions. I have no idea what program it is for. I thought it was for Sonic, a program that came on my Toshiba originally, but I have uninstalled it and went through the registry to clean it up. So I don't know where else to look. Again: XP SP3 on Toshiba A105 Satellite, 1 gig ram.

I used to have Vista on my Dell XPS m1530, but I installed Windows 7 over it a few weeks ago. It worked fine until now.
After the BIOS loading screen, it just says "NTLDR is missing. Press any key to restart". I searched for solutions to this online, but none of them worked.

I then tried to reinstall Vista over Windows 7. At the partition select screen, I had three partitions, two of which are too small, so I chose my main partition (which has 158GB free). When I selected the partition, it said "Windows is unable to find a system volume that meets its criteria for installation" I chose to reformat the partition with the hope that it would get rid of that message, but now it still says "Windows is unable to find a system volume that meets its criteria for installation"

On top of that it still says "NTLDR is missing" if I don't boot into a cd.

What should I do???? arhhhh!!!

Hi all.

First timer, so please go easy.

Computer Spec:

Intel Quad Core 2.87Ghz
2 x 2GB DDR2 RAM
1 64GB SSD drive (my C drive - operating system is installed on this)
2 x 1TB SATA hard drives.


I've done a fresh install of Windows 7 Ultimate 32bit. This is the 6th-7th time I've reinstalled due to the same problem.

Every time I boot up without the installation disc in, it comes up with BOOTMGR IS MISSING and instructs me to restart.

So far, the fixes I have tried are:

1) Startup repair - doesn't work. Does not detect problem.

2) RebuildBCD - does not detect any operating system. It says it has completed the operation successfully but above it it says "Operating Systems detected: 0"

3) Command Prompt:

"copy bootmgr c:"

then it says "The requested file cannot be found".

Still the same result, it won't let me boot without the installation disc in. It doesn't boot from the disc, it just uses the disc to get the file it needs (BOOTMGR) to boot the operating system. I didn't used to have this problem and then one time when I re-installed it just started. The hardware is all out of warranty now, so I'm hoping this is something that can be fixed without having to buy any new parts. I can use the computer - just not without the disc.

PLEASE somebody help me. There has to be a fix. I'd appreciate any help.

Thanking you in advance,


My computer is now useless.

I had windows XP, and recently decided to upgrade to 7, skipping Vista. I have all my important files backed up, and I intend to reformat the hard drive and start fresh. I put in the Windows 7 disk, clicked through the various "customize" and "advanced" tabs on the screen where I select a drive to install to, selected the drive I wanted, and hit "format", and verified that I really meant to do that. Nothing appeared to be happening, so I got up and made some lunch, and when I came back nothing still appeared to be happening. I assumed that it might format the drive during the next step. I am still not clear whether this is the case or not.

I selected the drive and proceeded with the installation. It said it was copying the files from the disk, then expanding the files, but it remained at 0% files expanded for several minutes before informing me that the files were missing, and the installation could not continue. It took me back to the first screen, and I tried all the prior steps again, twice, both with and without selecting format and had identical results. I decided to restart and try again, which I did by closing the installation window and verifying the restart, only to have more identical results.

Frustrated, I decided to simply upgrade the XP installation to 7 and then manually delete the chaff from the HDD when the process was finished. I restarted again, this time selecting upgrade from the menu, where it informed me that I had to open this option while running my previous version of Windows. I restarted yet again, this time not booting from the DVD, and saw "BOOTMGR is missing, Press Ctrl+Alt+Del to restart".

Getting pretty sick of restarting repeatedly and getting nowhere (it keeps going downhill from here), I nonetheless tried again, to be greeted with the same message. I finally resorted to firing up my trusty Compaq laptop slab from 2001 (where I am writing this right now) and Googling the error, and came up with two possible fixes to try.

Rebooting to the DVD, I selected "repair your computer" instead of install, but the list of existing operating systems was empty. I hit "use recovery tools (yadda yada)" anyway, opened the terminal, and tried startup repair, which said it could not fix my problem. Then, I opened the terminal and tried bootrec.exe /fixboot (successful), bootrec.exe /fixmbr (successful), and bootrec.exe /rebuildbcd (0 windows installations identified). Restarted, got same error. Thinking that the empty existing operating systems list and the rebuildbcd message meant that something was wrong with my XP install now, I dug out my dusty old XP disk and tried to use it to repair or reformat the drive in a desperate bid to regain some usefulness from my machine.

It BSoD'd before geting to any options, and continues to do so if I restart and try again.

So, to recap:
Can't finish windows 7 installation, it can't find the files it just copied.
Can't open previous XP installation, it can't find the bootmgr.
Can't upgrade XP to 7, it requires me to be in XP first.
Can't fix the bootmgr, it doesn't think the XP install is there.
Can't install fresh XP, it BSoDs.
Can't do anything with my computer anymore, see above.

How do I proceed?

EDIT: Ah, forgot the hardware. Knew I was going to ramble on for pages and forget something crucial.

Processor: Intel Core2 Quad, 8 GB RAM, GeForce GT120, 1.5 TB HDD.

EDIT2: Might as well post updates as I slog through this. Have decided that, rather than the entire XP install being faulty, it may just be the THEM SOFTWARE THINGS WOT MAKE HARDWARE THINGS GO GOOD for the chipset, which, on checking nvidia's site, seem to have separate versions for 2000/xp and vista/7. These include the SATA controllers, which could mean that the 7 disk is inconsistently reading the contents of the entire drive, not just the XP files. My theory is this would explain most of my problems: 7 won't install because it can't read the files it just wrote, and its boot manager can't be fixed to deal with the XP install because it can't read the hard disk it's on.

Current problem: the chipset FILES FOR TELLING COMPUTER BITS HOW TO WORK HARD from nvida are packaged in an installer .exe, which obviously doesn't register on the 7 disk as being THIS WORD ALSO MEANS PEOPLE WHO STEER CARS AROUND. I can't install the MORE OF THEM ONES AND ZEROES on the computer that needs them because it isn't working, and I can't install the THIS IS A GOLF WORD TOO on this working laptop (to port over afterwards) because it doesn't need them. Why is it packaged like this? Do I really have to find another, already-functional computer with the same motherboard? I'm assuming this was Gateway's way of making sure you couldn't do anything with their computers. I'm going to keep mucking through Google in the hopes that I will somehow find the I AM NOT GOOD AT GOLFS files intact and free of their obstinate and unnecessary .exe wrapper, but this seems unlikely. I may have to just replace the motherboard.

EDIT3: apparently a common and relevant word has been filtered out on this forum, in what I must assume is a concerted effort to stifle clarity. Previous edit has been altered accordingly, now you can all rest easy.

EDIT4: I found partial success upon trying to install the VROOM VROOMS on my laptop, then renaming the folder it unpacked the files into before it got to the part in the installation where it told me they wouldn't work with my computer and deleted the files. Unfortunately the resulting folder is quite large. I've trial-and-errored most of the files that would seem most likely to be the correct ones but haven't found anything yet. Not sure how to proceed if this proves fruitless.

Hello, and sorry to have a first post asking for help. I did a forced shutdown when my PC seemed to be incredibly slow then hanging while logging off. On restarting, I got 'disk read error' repeatedly, after the BIOS boot screen but before any of Windows.

I used my Windows install CD to run System Repair, which went like this:
* couldn't identify an OS to fix and since I couldn't find a hard disk driver to install, I just carried on to find Repair
* short first disk repair, then approved a restart
* much longer second repair cycle, accompanied by 'File or directory Windows is corrupt and unreadable' window - very persistent but kept OK-ing it until it stopped. [Is this genuine or malware?]

It was taking a long time (>1 hour) so I went away to do other things and popped back from time to time. Next thing I saw was the normal choice of users login screen, with User and our two named accounts, which I thought was a good sign, but all is not well.

I now have the following situation for my account, which was the one being logged off when I powered it down:
* Logging in the first time, and a second time after a reboot, invoked 'Preparing Desktop', and leads to a default desktop and minimal icons
* I can't see any of my files, either via Libraries or in Users.
* Applications have no history, 'Recent Files' etc.
* But... I do have familiar files in my Recycle Bin!

The User account [administrator] seems OK but we don't leave much there. I can't see the Event Log - a DLL is missing. I can't get our wireless connection to work. Other software installed - Photoshop, Office - seems OK though Office did think to itself a bit. I can't see my files from this account either - Usersusername is just not there.

I ran a disk check on C: as administrator (via Windows, not command line), with the full sector check, and it reported no problems. I don't know how to find any report from the System Repair process.

The other normal user account seems fine - familiar desktop, files present.

In retrospect, no, I probably shouldn't have forced the shutdown; I should have made some restore points; probably other things too... but too late now. I have many of the files elsewhere, one way or another, but I can't help thinking these files are still there somewhere, just disconnected.

I'd be very grateful if anyone could suggest what to try next.


Hey all I know this is a common problem but so far I have been unable to fix it with any of the answers I've found anywhere. Let explain the situation in detail.

I recently purchased a new OCZ 64GB SSD to install Windows 7 64 bit on. I have a separate 500 GB HDD for storage, but I completely disconnect this drive when doing my install because the Windows 7 install disk will not recognize my SSD if it's not the only drive plugged in.

After installing Windows everything works fine for a time. I am able to reboot multiple times during the windows update process (btw this is a possible culprit for the issue that is occuring) up until the first 5 security updates for Sevice Pack 1. After installing these updates and shutting down my PC will not boot up and I get the bootmgr is missing error. I have at this point hooked my HDD back up, but it is well after my Windows install has finished, so there doesn't seem to be any way that Windows is writing the bootmgr file to my HDD because I have booted up multiple times with neither the windows install disk in the dvd drive nor the HDD plugged in.

This has happened 4 or 5 times to me now and it's getting really frustrating. I'm trying to figure out if something's wrong with my SSD or if there's some update in Windows 7 sevice pack 1 that is incompatible with my hardware. Thanks again for your time.

I searched every where and people have had this issue but none of which has solved my problem...
so the scenario is i dual booted XP and Win7 for a while because i wasn't sure if it was the right choice..
when i use to boot i got the screen do you wish to boot an earler version of windows or would you like to boot Win7

... any way i got a disk wipe and wiped my hard drive Clean... now that i try and boot

NTLDR is missing
ctrl alt del to restart

I don't want to reinstall Win7 it will over Write to many files i need Please very important can anyone help.. Pm me or comment here Please

I've also tried the commandprompt trick on here to no avail either. Strangely, whenever the Windows CD is in my CD-ROM, it starts up fine and works. However, I will go to work and come back after having left it on and it will be back to the BOOTMGR is missing screen inevitably by the time I get back, so I don't know long it stays working with the windows 7 CD in.

Any alternate ideas OTHER THAN the startup repair and commandprompt suggestions offered on here? Would a clean re-install of windows 7 do it? I would prefer not to but it isn't out of the question. I am something of a computer novice, but as best as I can tell, I have a Corsair SSD with windows installed on it, and a separate regular old HDD from Seagate for storage of media. Please let me know any solutions you have.

I'm very sure, especially if you've ever installed a second HDD on your computer yourself you have seen this message. BOOTMGR is missing Ctrl+Alt+Del to restart.

Basically when it says to restart it is assuring you no treatment will work, WRONG! this is one of the easiest problems ever to fix, if you have your Windows 7/Vista installation disc.

First step - Boot from installation media

Second step - Go through everything until you find a button that says "Repair your computer"

Third step - Let it run though, on the first time, it will not find a WORKING operating system, restart when it prompts and boot the disc again.

Forth step - Repeat Second step, and now your OS should be listed, click on it and run Startup Repair.

Fifth step - Do NOT boot from disc, because it should now be fixed.

(this i have only tested on 7, idk if this completely complies to Vista)

I hope this has fixed your problems and please respond if it worked, or if it didn't work with all info about the failed attempt. Thank You, -The Xenocorn

Hi All,

I have a single 500GB SATA HDD in my computer. (Rest of the specs are : 24x HP SATA DVD R/W, Intel C2D E7500 processor, Intel DG41RQI MoBo, Kingston 800 MHz 2GB RAM). When I first setup my hard-drive, I first installed "Windows 7 Home Premium 32-bit" on D: drive then "Windows 7 Ultimate 64-bit" on C: drive (some mis-communication between me and my brother).

The computer worked fine for about 2 months before I decided to "Compress drive to save disk space" on C: drive two days back. I issued the command and went away. On coming back I found my PC shut-down. When I powered it on again, it said
BOOTMGR is compressed.
Press Ctrl + Alt + Del to restart.

I searched Internet for solutions. Tried some of them. To no avail. Please note that I used a recovery CD already prepared for the process.

Then I used "System Restore" from the System Recovery Options from the Recovery CD. Restore process was successful, but then I started receiving another even agonizing message
BOOTMGR is missing.
Press Ctrl + Alt + Del to restart.

I again searched Internet, tried a few solutions, again to no use.

In despair, my bro installed Windows XP on a separate, unused partition backed up his stuff from D: drive. But I cannot do the same. I have to login into my Windows on C: drive to get my data back (mostly databases of the Web-sites and applications I am developing or have developed, which can be backed-up from the software concerned). I have backed up my codes though. Luckily I don't keep anything else on the Windows partition.

Sorry, getting personal. In the mean while I used the command "C:bootrec /ScanOs" and "C:bootrec /RebuildBcd". They say:
Successfully scanned Windows installations.
Total identified Windows installations: 0
The operation completed successfully.

When I run commands "C:bootrec /FixBoot" and "C:bootrec /FixMbr", they say
The operation completed successfully.

But I must say that when the recovery CD starts up initially (when it scans for installations of Windows), it does show that there are two installations of Windows on D: drive and C: drive in that order.

I have tried "expand bootmgr temp" sequence of commands. I have tried individually decompressing the compressing the folders that were decompressed. Everything again failed. (Notepad works from the Command Prompt in the "System Recovery Options" on the recovery CD. I was able to expand the compressed folders and take some backup from the Open or Save dialog box of the Notepad).

The "Startup Repair" option under "System Recovery Options" shows in its Log that no OS is installed".

Any ways here's the output of the command "C:bcdedit":

[COLOR="rgb(139, 0, 0)"]Windows Boot Manager
identifier {bootmgr}
device partition=C:
path bootmgr
description Windows Boot Manager
locale en-US
inherit {globalsettings}
default {default}
resumeobject {4815cc3c-6b60-11df-9403-ab5c0a4d15b4}
displayorder {default}
toolsdisplayorder {memdiag}
timeout 10

Windows Boot Loader
identifier {default}
device partition=D:
path Windowssystem32winload.exe
description Windows 7
locale en-US
inherit {bootloadersettings}
recoverysequence {4815cc42-6b60-11df-9403-ab5c0a4d15b4}
recoveryenabled Yes
osdevice partition=D:
systemroot Windows
resumeobject {4815cc40-6b60-11df-9403-ab5c0a4d15b4}
nx OptIn

Windows Boot Loader
identifier {4815cc3d-6b60-11df-9403-ab5c0a4d15b4}
device partition=C:
path Windowssystem32winload.exe
description Windows 7
locale en-US
inherit {bootloadersettings}
recoverysequence {4815cc3e-6b60-11df-9403-ab5c0a4d15b4}
recoveryenabled Yes
osdevice partition=C:
systemroot Windows
resumeobject {4815cc3c-6b60-11df-9403-ab5c0a4d15b4}
nx OptIn

EVEN WORSE, I can boot from the Win 7 DVD, it loads files and when I click "Install Windows", it says :
A required CD/DVD drive device driver is missing. If you have a driver floppy disk, CD, DVD or USB flash drive, please insert it now.

When I click OK, it again shows up a dialog saying:
No device drivers were found. Make sure that the installation media contains the correct drivers, and then click OK.

Now, I don't know where to find the drivers from and what drivers is it asking for.
So I cannot format my partition even if I want to.

My first booting device in BIOS is HDD, but changing it to my optical drive didn't make a difference.

I am still stuck in BOOTMGR is missing.

Any help please.

No changes were made since last boot.

Attempted to follow instructions posted here:
windows 7 bootmgr is missing-- resolved using WinRE - Microsoft Answers

Method 1: Message states a fix was made.Root cause found: The partition table does not have a valid System Partition.
Repair action: Partition table repair
Result: Completed successfully. Error code = 0x0
However, problem persists after reboot. The wizard indicated that multiple reboots may be necessary, but the wizard does not restart after reboot.
Method 2: Attempted to use Bootrec.exe /FixMbrMessage: The operation completed successfully.
Attempted to use Bootrec.exe /FixBoot
Message: Element not found.
Attempted to use Bootrec.exe /RebuildBcd
Message: Element not found.

Attempted to export and delete the BCD.
The command bcdedit /export C:BCD_Backup returned:
The store export operation has failed.
The requested system device cannot be found.
Method 3: When I attempt a system restore, it errors with:

To use System Restore, you must specify which Windows installation to restore.
When I view the System Recovery Options dialog box, no Windows installation drives are listed.

In addition, when I view the C: drive in the DOS window (my Windows installation drive), that drive lists as empty.

I am looking to log in to a local user account on a windows 7 machine but I can not specify which account I want to log in to because the "other user" icon is missing at the log in screen. There are a few other icons but none are the one I want to log into. Do you know how to put the "other user" icon back?