Something seriously wrong with desktop PC. It regularly shows the blue screen of death. When I try to install Windows XP onto it, it says some files cannot be copied. It is not my hard disks, not my CDROMs. It is likely to be my motherboard. Damn !!
Updates !
I have isolated the problem to the RAM. I plugged in my old pair of 512M RAM, the PC powered up perfectly. I ran the Windows Memory Diagnostic test, it confirmed my 1GB RAM pair was faulty.