Error loading operating system for Windows 7

[Chomerly]

Right,
I've had a problem with a rootkit virus that i have now gotten rid of after much faffing about.
I had to mess about getting rid of the virus but it left residual files that were causing me even more problems.
One of those files, veawi.sys, refused to go away as everytime i tried to delete it i would get a message stating that "a device attached to the system is not working" or something along that line.

Anyway, i tried to get rid of it by installing Windows XP to a USB hard drive that i have lying around so that i could use the command prompt to delete the file from the windows\system32\drivers directory.
That didn't work as i would get the message "NTLDR is missing" and my Windows 7 installation wouldn't boot either as i'd get the message "Error loading operating system".
To add insult to injury i found, after using the installion disc for Windows 7, that i could have just used the command prompt in the repair section of the disc which allowed me to get rid of the culprit file.

I've tried running the startup repair from the Windows 7 disc and it states that there are no errors found.
For the first time in ages i'm stuck and i get the feeling that i'm going to have to reinstall Windows 7 all over again.

Does anyone have any advice that will help as i really don't want to reinstall windows again.

 

[Tews]

Do a repair install... This will show you how to do a repair upgrade install to fix your currently installed Windows 7 and preserve your user accounts, data, programs, and system drivers.

http://www.sevenforums.com/tutorials/3413-repair-install.html?ltr=R

 

[Chomerly]

Hi,

Having looked into the repair install guide in your post, it states that it must be done within windows 7 itself.
That's the problem. I can't get into windows at all. It just sits there after the post boot and gives me the message in my last post.


Just to add, i just tried a startup repair again and came up with a message saying that it couldn't repair the problem.
Having looked at the information tab it stated CorruptBootSectorCode, or words to that effect.

 

[Tews]

Boot from your install DVD and select the repair option...

 

[Chomerly]

Done that.

In the Diagnosis and Repair details it states:

Root causes found:
-----------------------
Boot sector code for system disk partition is corrupt.

Repair action: Boot sector repair
Result: Failed. Error code = 0x139f
Time taken = o ms

I'm unsure what i should do now.

 

[Tews]

How to fix boot sector errors with Bootrec.exe

 

[Chomerly]

Thanks Tews,

I've just done that prior to reading your post.

I've got it all working now.
Thanks for your help again.



Just in case anyone else who needs the info.
http://www.sevenforums.com/tutorials/20864-mbr-restore-windows-7-master-boot-record.html

 

[jag32266]

Whew!! Thank YOU

I too were having the same issue,... finding on boot that the NTLD was missing/corrupt.

It's post like these that keeps my head up b/c this can become so frustrating. I'm off to try several of these solutions since I have already covered the first few as posted above. I have faith that if they solved the original posters issies it will solve mine.

Just wanted to post and extend my gratitude for all the information posted here and to all the helpful souls,.. I wanted you to know how much it helps. Please keep it up and giving this type of items out for us lost ones...

 

[gregrocker]

Troubleshooting Windows 7 Failure to Start

 

[jag32266]

Hello,
I followed instructions on doing a restore MBR. I also was able to carry out a scan of all HDD using malwarebytes with success. I also made sure I did not have the latest kb2859537 install due to the bsod issue I read about. A restart had Win 7 starting as usual.
If this remains I will be most happy.

All my gratitude for these great GUIDES you have posted here- most helpful!!
Thank you

 

[gregrocker]

Did you have infection? If so run MBAM full scan again, followed by a full anti-virus scan. If it persists post up the results of both in our Security forum for expert help.

If it appears to be cleaned up then run SFC /SCANNOW Command. In fact I'd run even if there wasn't infection.

If it's stable but has any remaining issues you can switch to Troubleshooting Steps for Windows 7 to go over it thoroughly. If it stops booting go back to the unbootable troubleshooting steps.