John, I had a similar fault and it was covered here late last spring. I had an IBM with 256mb RAM [double sided] and I added another 256megs single sided, not knowing the difference. Talk about reboots. Once, FOUR times in 1/2 hour !! A trained IT friend told me to check the memory cards. After I took out the single sider, the problem was gone. Have you checked your cards ? AL SMITH John Sproule <[log in to unmask]> wrote: You might try using Prime95 and MemTest86 to check the stability of processor and memory. Use each one for a minimum of 12 hours. If either produces errors, you likely have a hardware problem of some sort (or at least a hardware configuration problem). If you pass both, you at least can have some confidence in your processor and RAM, and you can move on to trying to eliminate other factors. By the way, what programs are you typically running when you get these reboots? Any pattern or common denominators to what you are doing when they occur? About how often do they happen? John Sproule ----- Original Message ----- From: "Adam Favre" To: Sent: Sunday, September 05, 2004 1:00 PM Subject: [PCBUILD] Still Having Spontaneuos Reboots After Normal Suggestions for Troubleshooting > I have a home built rig that is still having spontaneous reboot issues. I have replaced the Enlight Power supply with a an Antec True 480 psu, I have replaced upgraded (or changed) memory from Mushkin Green PC 3200 memory to OCZ Enhanced Latency PC 3200 memory. I have checked operating temps. The CPU run well within spec from AMD (highest temp 49celsius, 120 F under load) and case temp hovers around the 90F (32C). I have upgraded to the latest bios for my board and have also upgraded to the latest NVIDIA NFORCE2 drivers. I cannot recall exactly when the spontaneous reboot issue started (no particular upgrade or hardware install sticks out). Here is what I have hardware wise, I hope you can help. > > AMD ATHLON XP 3200+ > ABIT AN7 Mobo > 1 Lite On DVD RW+- 8x Drive (IDE) > 1 SAMSUNG CD RW Drive (IDE) > 1 Western Digital 160gb Caviar Hard Drive w/ 89mb cache (7200 RPM) > 2 OCZ Enhanced Latency 512k DDR PC 3200 ram modules running in dual channel > 1 ATI Radeon 9800 pro Video Card > 1 Antec Tru 480w power supply > 1 Teac 3.5 Floppy Drive > > 2 80 mm Case Fans (1 intake, 1 exhaust) > 1 Thermaltake Heatsink/Fan The NOSPIN Group is now accepting donations to help defer the costs of providing PCBUILD and our website. Visit http://freepctech.com to donate using PAYPAL --------------------------------- Post your free ad now! Yahoo! Canada Personals PCSOFT maintains many useful files for download visit our download web page at: http://freepctech.com/downloads.shtml