toshiba A75 laptop, winxp. okay, so i got this toshiba laptop thats been shutting down randomly. ive sucessfully been able to scan with memtest, boot into hiren mini xp(piddle around for an hour), and scan with avira rescue, AND NO SHUTDOWNS. The only time its shutting down now is when i try to install windows xp, it loads all the predrivers into memory, then it shuts down at the same point everytime, right before the selection of (s)setup, (r)recovery and format options. the main hdd looks like someones tried to reinstall windows and didnt finish copying all system files all the way, like it mustve shutdown midway. So i reformatted the C: drive and checked for errors just in case. Everythings fine. ive updated the bios from 1.10 to 1.60. a number of things ive done and plan to do. any suggestions would be great. ive read about a static electricity problem with this laptop, is this possible? - inspected ram slots for burnt memory, looks like 512MB onboard ram, only one expansion ram slot open. Did these laptops come with 512MB onboard memory soldered onto the mainboard? Ive never seen that before. - memtest86 for an hour, passed on 1-1/2 passes. (plan to go for longer later on) - formatted, error checked hdd, plan to run hdd diagnostics later - updated bios - removed laptop battery/wifi card and just powered on with ac adapter, still shutting down. i plan to open it up and inspect the hsf's, apply arctic silver, and inspect the ac plug port, resolder if necessary. The fans are kicking on properly and from the outside it doesnt look like the hsfs are clogged. anything else i need to try? i find it weird it shuts down at the same point everytime, like it could be ram issue. but since the ram looks to be built in, the laptop would be useless.