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CMD and Regedit Problem

post #1 of 10
11/10/06 at 11:13am
Thread Starter 
I have a dell i6400 and recently i might of been infected by a virus. Now, i can no longer use cmd or regedit, and it saids: C:\Windows\system32\cmd.com The NTVDM CPU has encountered an illegal instruction. CS:0dd9 IP:00dc etc.....I did some googling and it saids perhaps replacing a cmd.com in WINDOWS/system32, but my dell doesn't say i have the WINDOWS/system32 folder, only I386/system32. Doesn anybody have a solution for me?
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post #2 of 10
11/10/06 at 11:59am
Have you been running an antivirus program on it?
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post #3 of 10
11/10/06 at 12:04pm
Thread Starter 
Nope, none
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post #4 of 10
11/10/06 at 12:16pm
Then I'd have to recommend a fresh Windows install, and start running a good antivirus program.
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post #5 of 10
11/10/06 at 10:24pm
Yes a fresh install would be about the only way. Backup your important data, reinstall, and then use AVG Antivirus and Windows Defender (antispyware) from now on. Let this be your lesson.

Fully recovering it to the state before the virus infection would be next to impossible, if it's so bad that it disabled cmd and regedit.
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post #6 of 10
11/10/06 at 11:54pm
AVG FREE 7.5 and now AVG antispy free I have used both super good, AVG for 3 years now!!
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post #7 of 10
11/11/06 at 1:06am
Thread Starter 
I gave dell a call and see if they could do anything for me. All they recommended to do was to use dells pc system recovery as they don't know how to confront the problem. But, i don't want to go through the hazzle of reinstalling everything. They offered to send me the windows installation discs, and perhaps the "repair option" in the disc can recover the components and system files. The discs arrives next week. I shall let ya'll know how it turns out.
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post #8 of 10
11/11/06 at 10:14pm
From my experience reinstalling doesn't always clearouth the viruses. All the reinstall does install over the existing OS. The best thing to do is a complete wipeout of you harddrive meaning to get a program that resets you hard drive to Zero. It's make you harddrive data free and wipes out anything that exist from your last install. This way you'll get a fresh start.
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post #9 of 10
11/11/06 at 11:12pm
Thread Starter 
I restored to a previous pt and the virus has not bothered me, just the cmd and regedit causing a concern now
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post #10 of 10
11/11/06 at 11:32pm
Oh so the virus didn't disable system restore! I was going to suggest that but as far as I have seen, most viruses disable system restore or infect the restore points...

In that case, when you get the windows disk, put it in and go to start > run, then type "sfc /scannow" (without quotes) and click OK. It will check the important Windows files (hopefully including cmd and regedit) and replace them with the copies from the CD, if it works like it should.
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