ShyTorque
9th Aug 2008, 20:44
After my recent problems with a virus/worm infection in my PC, I thought I had it all under control again.
However, over the past few days it has suffered random failures of the USB keyboard output. I rebooted after changing to a spare PS/2 keyboard, no change.
I also carefully cleaned off the dust from the innards, and cleaned and reseated the CPU heatsink and fan (which was running). I noticed this made little difference to the running temperature according to the BIOS's temperature monitoring facility.
This problem went away for a while after I allowed the PC to cool right down before rebooting, only to recur later at random intervals.
Today I rebooted after another failure, only to hear a POST beep code of 1-8-2-1.
Nothing on screen shown, it doesn't get as far as switching on the video output. Suspecting a video card failure (AGP) I fitted an old PCI video card instead. No change, same beep code. I disconnected all the peripherals, same beep code.
I've also reseated the DIMM modules and tried them singly in each slot.
Anyone got any further clues? The title gives away my own suspicions after all this.
However, over the past few days it has suffered random failures of the USB keyboard output. I rebooted after changing to a spare PS/2 keyboard, no change.
I also carefully cleaned off the dust from the innards, and cleaned and reseated the CPU heatsink and fan (which was running). I noticed this made little difference to the running temperature according to the BIOS's temperature monitoring facility.
This problem went away for a while after I allowed the PC to cool right down before rebooting, only to recur later at random intervals.
Today I rebooted after another failure, only to hear a POST beep code of 1-8-2-1.
Nothing on screen shown, it doesn't get as far as switching on the video output. Suspecting a video card failure (AGP) I fitted an old PCI video card instead. No change, same beep code. I disconnected all the peripherals, same beep code.
I've also reseated the DIMM modules and tried them singly in each slot.
Anyone got any further clues? The title gives away my own suspicions after all this.