14,000 viruses found, do viruses affect the motherboard, CMOS, BIOS?

No joke, found about 14,000 viruses on a hard drive (No Anti Virus for 2 years). Computer was working, but obviously very slow and all kinds of pop ups, so then I uninstalled sum generic expired anti virus and was going to install MCAFEE, so I uninstalled the antivirus program that was expired since 2005 and when I restarted the computer, it never came back on.

I figured it was because of the viruses, so I did a new windows install on that hard drive using another computer, but when I plugged the hard drive back to the original computer it still didnt work.

What happens is that the fans and power turn on and even the DVD drive turns on but it doesnt read the hard drive, it doesnt even go into BIOS. The monitor stays off like if the computer were turned off (orange light).

Its not the monitor or HD cables because I tested them and they work, it just doesnt make sense that exactly when I removed the anti virus, this happend, and it was workin for 2 years.

WAT THE $^@! is this?

14,000 viruses found, do viruses affect the motherboard, CMOS, BIOS?internet security software

Viruses do not effect hardware-Currently. I do not believe that your problem is due to the viruses. One of four things has happened.

1. You knocked the video card loose while you were removing or replacing the hard drive.

2. The power supply stopped working when you tried to reboot the computer. I know this sounds weird. but this is when a power supply will give up.