Boot problem

Hello. My name is Barry and I sincerely hope you can help me. I have an EMachine T3410 with original motherboard and alot of new hardware. Two days ago a friend had viruses on his PC. I removed his hard drive and placed it in my PC as a second drive. I boot from my HD and was able to run a virus scan on his drive. Found several and removed them. Got him up and running again. Everything worked great. When I put MY second drive back into PC and tried to boot my PC back up with all my original hardware, I plugged in unit and it started all by itself with no help from power button. The fans run like crazy but nothing happens. My screen sits there and blinks looking for a signal. There's no bios beep and no way to access bios. I tried new PSU with no luck. I tried different memory sticks. It just sits there racing the fans and that's it. I would truly appreciate any help you can give. I really cannot lose my computer. Thanks in advance. .....
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these are some guidelines to start checking your computer systematically:
Disconnect power cable, reset BIOS with the jumper or take out for 5 seconds BIOS battery
Caddo71Author Commented:
I've tried all of the above. Nothing worked. You've sent me 3 E-Mails saying the same thing.
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Caddo71Author Commented:
I've tried all of the above. Nothing worked. You've sent me 3 E-Mails saying the same thing.
remove your hardware, and check if it runs then ok
then inspect the connections, and add  device per device to test
Caddo71Author Commented:
Thanks for suggestion, I appreciate it. However, I've done that and then some. I've checked for bad caps, solder connections on motherboard, every wire. Tried new PSU, new cables. I've dealt with some difficult problems before but this one I just can't figure out. It's like a virus got into my bios somehow. I'm about to give up on it. So thanks again and if you can think of anything else, I'll be glad to hear it.......
think of anything else?
sure, still lots to suggest :
-replace the bios chip (obtained from mobo supplier)
-repair the chip :      
-look for a n identical mobo, and copy the chip
-replace mobo with newer one.. (best for long time results)

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Caddo71Author Commented:
Didn't really suggest anything that I couldn't find on a free site. Thanks anyway....
Caddo71Author Commented:
Hello again. I tried every suggestion you offered with no luck. I ended up buying a new motherboard online. Thanks anyway.......
it happens really often imo...too often
In this case I do the next steps:
-take your motherboard out of the case.
-connect ANOTHER  PowerSupply, keyboard and monitor.

Start PC. If you have the same result and BIOS reset wasn't helpfull
than your motherboard is defect and you have to replace it.
It can be different reasons: static electricity, deformation, the failed element, the virus ....
If you still have warranty then change this MB
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