motherboard: shuttle hard disk: seagate 7200 rpm 40 gb (new) os: windows xp sp1 power supply: 300w no cdrom drive no disk drive onboard video (8mb shared video memory) when the problem occurs, the motherboard is still lit up and i can also hear the hard disk spinning... during this time also windows displays the dreaded BSOD and when i try to restart, the hard disk cannot be detected anymore... i go to the BIOS to do a HD detection but it cant be detected anymore... ive also tried replacing the cable but to no avail... then after turning off the computer for some time, the HD shows up again... we have 10 computers here with the same specs... this one computer is giving me a headache and i dont know much about where to look at about the problem...