Originally posted by: Operandi
This is truly one of the strangest circumstances I've come across. Why would a machine that can run Orthos, and MEMTest for hours have problems with random reboots with simple mundane work loads? It just doesn't make sense.
My C2D rigs, an E2140 @ 3.2Ghz, 1.425v (BIOS), 1.360v (CPU-Z), FSB 400x8, 2x2GB Patriot EL DDR2-800 RAM, rated 5-5-5-12 2.0v, running 5-5-5-15 1.8v, CoolerMaster HyperTX2 (80C under load), WD 320GB SATA HD, LG 20X IDE DVD burner, ThermalTake 430W PSU, Gigabyte GA-P35-DS3R v1.0 mobo, Radeon X1950 Pro.
It randomly restarts on me. Yet, when it doesn't do that, it can run 24hr stress tests, and I've had XP uptimes of a month at a stretch. It runs DC apps 24/7, that keep the CPU loaded, and I run MagicJack on it too. I can loop 3dMark01 24hrs too.
I have no idea why. It used to reboot once a day, when it was connected to a Back-UPS 550VA UPS. I connected it straight to the wall, and it stopped rebooting. So I replaced the UPS with an identical model, and that's what I'm running today. But it still restarts once in a while. I'm going to upgrade the PSU to an Antec Basiq 500W, when I upgrade the GPU. Maybe that will stop it.
Right now, I have a different machine plugged in to that UPS, a K9A2 Platinum with four 9600GSOs, BE-2400, 2x1GB DDR2-800, EarthWatts 650W PSU. It hasn't ever rebooted on me.
Thankfully, that's just my part-time gaming rig, and it's nothing important. Well, I did have it downloading 24/7 for a few months, and the reboots were very annoying, although they were few and far between.
Edit: The K9A2 system (stock speeds) just restarted on me too. I suspect this replacement UPS is also bad. It had about five days of uptime.