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Windows 7: Boot Critical File c:\\ci.dll Corrupted - HELP!


13 May 2011   #1

Window 7 Home Premium x64
 
 
Boot Critical File c:\\ci.dll Corrupted - HELP!

Sup guys, every time i turn on my PC or restart it jumps to Windows is loading file and then starts doing start up repair and later on it would show me error log:

Root cause found:
Boot critical file C:\\ci.dll is corrupt

And then it would say:

Repair action:
Repair the file

What should i do?

My System SpecsSystem Spec
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13 May 2011   #2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Another one?

There have been a few of these lately.

CI checks for unsigned drivers and checks that various system files haven’t been mucked about with by any nasties.

Suggest you try running sfc SFC /SCANNOW : Run in Command Prompt at Boot

Try a malware scan from a bootable a/v Avira AntiVir Rescue System - Download

If necessary replace ci.dll from another source e.g installation dvd.
My System SpecsSystem Spec
15 May 2011   #3

Window 7 Home Premium x64
 
 

Think i found root cause of the file corruption! I just reformatted my pc and it was fine but since i did 108 updates it started again so i think its the updates that is doing that. Imma say not to install those updates and see what happens.
My System SpecsSystem Spec
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16 May 2011   #4

Vista 64
 
 

yup it all started after Microsoft updates...
My System SpecsSystem Spec
18 May 2011   #5

Windows 7 64bit
 
 
Same issue

I'm having this same issue to the absolute T. I'm unable to even go to the boot menu using F12. I cant even get my CD-ROM drive open to try to use the recovery CD. Windows just keeps booting to the startup repair with the root cause being C:\\ci.dll corrupted...Im certain this was a virus. Was browsing the web, clicked on something and 7 lagged and crashed then restarted into this nightmare...
My System SpecsSystem Spec
18 May 2011   #6
Microsoft MVP

 

Can you boot into Safe Mode to install and run Malwarebytes full scan?

If not run bootable AV scan: FREE Bootable AntiVirus Rescue CDs Download List

Once it's cleaned up run SFC -SCANNOW Run in Command Prompt at Boot from Repair CD.
Then run Startup Repair repeatedly if it still won't start.

You can copy out your files using the DVD/Repair CD: Copy & Paste - in Windows Recovery Console

Then run Factory Recovery or reinstall using DVD. Reinstalling Windows 7
My System SpecsSystem Spec
19 May 2011   #7

Vista 64
 
 

@ gregrocker I have tried all those methods and guess what ?!?!?! none of them worked except reinstalling a fresh copy of WIN 7. I did a full scan by malwarebyte antimalware, Superantispyware, Avira Antivirus and three more well known antiviruses. none of them catch any virus.... I ran a bootable AV scan. FAIL*** I did SFC/ scannow in command prompt. EPIC FAIL*** I copied ci.dll file from my brother's computer (he has the same win 7 as mine) through thumb drive, it works but when you reboot you machine you have the same problem. I tell you what: either install a fresh copy of your OS or upgrade it. then turn off Microsoft automatic updates for a week or month... you are all set..
My System SpecsSystem Spec
19 May 2011   #8

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

It shouldn't have any effect on being able to boot from cd/dvd.

Your installed Windows is not involved at all in that process.

Quote:
Skiordie

I'm having this same issue to the absolute T. I'm unable to even go to the boot menu using F12. I cant even get my CD-ROM drive open to try to use the recovery CD. Windows just keeps booting to the startup repair with the root cause being C:\\ci.dll corrupted...Im certain this was a virus. Was browsing the web, clicked on something and 7 lagged and crashed then restarted into this nightmare...
My System SpecsSystem Spec
19 May 2011   #9

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Sounds like it may well be an update issue from earlier description - yours sounds different.

If it is an update, only way round that is to roll back to before the update - try system restore from bootable media first.
My System SpecsSystem Spec
20 May 2011   #10

Win7 Home Premium 64bit
 
 
Corrupt CI.DLL -- my sad fix

Just found this forum, story is the same -- crashed while streaming video from an unfamiliar website, couldn't boot past the recovery options which identified corrupt ci.dll file. Tried several restore points, no luck. Used command prompt to find and copy to USB some of my files, but not all of them -- couldn't get to my desktop files at all, command prompt wouldn't recognize the path, even though I could see the correct directory -- still don't know why. Booted from and ran an AVG live CD, found nothing, but I still suspect a virus (have been running MS Security Essentials only). . .finally had to download Linux Ubuntu Live CD, boot from it, find my important files and copy them to USB drive. Now, after countless attempts to recover, I'm formatting and starting over. At least I got my files, though, and managed to use Ubuntu without a problem, even though I'm not much of a techie -- it was easier than I thought it would be. Having two computers sure helped.
k.
My System SpecsSystem Spec
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 Boot Critical File c:\\ci.dll Corrupted - HELP!




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