CMOS Virus????

Hi folks,
I'm hoping for some help here. I'm trying to determine whether or not my mothers computer has a cmos virus and if so how can I get rid of it. For starters the machine will boot but will only get to a certain point in windows and stop (safe mode also). It will not boot to a floppy and in the bios it will not let me autodetect or manually configure a hard drive. The board is an FIC 503+ running a 550mhz K6-2. I've tried several drives with the same result. In the Standard Bios screen it will let me change from User to Auto and will detect any hard drive I install but none of them will boot and they all have known good operating systems on them. In the Hard drive auto-detect screen it just shows a blank and freezes up. I've tried clearing the bios, flashing the bios with the latest version, pulling the battery, using the bios default settings and hitting it with a stick :) but no joy.
Virus??? If so how do I shake it? Or should i just toss it and give my mom the upgrade she deserves. As I've never seen anything quite like this before I'd really like to figure it out.

Thanks in advance for any assistance!!:) :)

Sounds like bad L2 cashe for me - try to disable it in BIOS...
It can be also problem with processor or with CPU voltage regulator...

All Fixed!!!
Somehow I knew that out of all the people who viewed this post it would be Ruslan who answered. Thanks so much for your response. I replaced the processor and have had no more problems. I don't know what fried the old one but I tried it on another old board I had and it failed bench testing. I should have tried this earlier but didn't have another one available. I bought a used one from a buddy and it worked just fine.

Ruslan, you've saved me two times now. I only hope I can return the favor someday.
Thanks dude,
:D
Marko

I've never really trusted the 550 K6-2. The 500 ran so much better, cooler, and more reliable.

Quote:

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Originally posted by FatalException0E
I've never really trusted the 550 K6-2. The 500 ran so much better, cooler, and more reliable.

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Agreed, that's my thought too. The 550 was pushing the envelope.

Marko, if you come back to this post, have you tried the CPU at 500 or 450, and/or raising the core voltage by .1 or .2 volt?