Suffering from spontaneous reboots
I've been working on my sister's machine, upgrading it and cleaning out the cobwebs, literally and figuratively...:rolleyes:
It's a Soyo Socket 478 mobo that I built from a barebones kit 3-4 yrs ago, and it became glacially slow which was her main complaint.
Took it home and worked on it on my bench; maxed out the memory per the mobo manual; it had a celeron cpu, so I upgraded that to a P4, and had it up and running rock solid on my bench. Defragged both drives, which took overnight in one case, and several hours in the others.
Then took it over to her house and fired it up, and all was well at first. Then after 15 minutes or so, it spontaneously rebooted. And shortly after windows loaded it rebooted again....and soon got to the point that barely got past loadint the bios and didn't even start to get windows loaded before it rebooted.
Took it back home.....and it fired up on my bench and ran flawlessly, from the get-go, like nothing ever happened. Played with it some, ran low level defragging for hours w/ Defraggler, and not a hint of problems.
Took it back to her house yesterday and it fired up and ran fine, for a half hour or so. Then apparently after I left, it devolved into the same set of problems as before. I had her switch power strips, I had her switch power cords, and unplug everything except the mouse and keyboard; no progress at all. Had her switch outlets, circuts, and I've got a new/better AGP video card coming and intend to replace it (no onboard video on this mobo).
The head scratcher is how it runs just fine (twice) for extended periods at my house, but soon devolves into the spontaneous reboots after I set it up at her house.
I'm out of ideas..... Anybody have any insight???