My friend has given me his computer to fix - the specs are as follows: AthlonXP 1700+ on Gigabyte GA-7VTXE+ w/ 768mb generic ddr GeforceFX 5200 (128mb), Creative Audigy, USB2 card Maxtor 60gb, Seagate 80gb, DVD and CD-RW drives 300w PSU He recently started experiencing random reboots (using winxp pro). His machine would randomly restart and then be fine again. About a week ago, its started to behave more erratically, not even getting far enough to boot from the disks before it reset itself again. As a precaution, I formatted his boot disk (via my own machine) and ran memtest and memdiag on the system - one stick failed and was removed but the problem remained. I used a stick of my own good Crucial ram, bit this had no effect. I cant even attempt to reinstall windows as the machine usually resets before it reaches any boot drives - the main points it resets at are: during the graphics card BIOS screen, during the main BIOS screen and even whilst inside the BIOS utility. The board even beeped today (more like a 3 note tune than just random beeps) but the Gigabyte site has no info on this. Machine is well ventilated, and ive ruled out a shorted reset switch. Hard disks both pass full OnTrack diagnostics, too. The machine is stuck in a resetting loop and ive no idea what to do now. Can anyone offer any advice?