Windows 98SE

My computer was working fine until I installed the Talktalk speedtouch broadband modem. Got modem installed and connected to internet, launched IE and typed in Google.com then screen switched off and PC went into a kind of standby mode. After a while pressing ctrl+alt+del, I just had to switch it off at the plug (since no buttons on the front of the PC were working).

Since then, I've ELIMINATED that it could be a software, HARD drive, graphics card or RAM problem (they all work in another PC of mine). Is there any kind of virus that may have penetrated the motherboard (I did have AVG7 and Zone Alarm running)? Or could it have been damaged by the Speedtouch modem?

Thanks for your HELP on this very CONFUSING problem!
TimHave you tried to reset the BIOS?

Most, if not all, viruses do not harm anything other than files on the Hard Disk Drive.Thats the problem, when I switch on it doesn't give me a chance to change BIOS settings. All that happens is the power comes on, and the hard drive works for a bit, then NOTHING at all (no response from keyboard either). Could my processor be damaged?

Cheers!Unplug the usb speedtouch modem.......does it boot now! Quote

Thats the problem, when I switch on it doesn't give me a chance to change BIOS settings. All that happens is the power comes on, and the hard drive works for a bit, then nothing at all (no response from keyboard either). Could my processor be damaged?

Cheers!