Hi Everyone I have a pretty irritating problem with a new computer setup and wonder if anyone has an idea of what I can do to combat it. Recently I purchased the following upgrades Asus P5AD2-E Premium 925XE (LGA775) PCI-Express Motherboard Intel Pentium 4 650 "LGA775 Prescott" 3.4GHz (800FSB) with HT Technology Antec NeoPower 480W ATX2.0 PSU Maxtor DiamondMax Plus 10 NCQ 160GB 6B160MO SATA 8MB Cache Sapphire ATI Radeon X800 Pro 256MB DDR3 2 x Corsair 1GB DDR2 Value Select PC4200 Dual Channel Kit (2x512MB) (I have 2gb ram installed on all 4 slots) The problem I have is random restarts, usually once a day, often twice, the system just goes down with no warning and restarts itself, this normally occurs when running a few applications like video rippers/ encoders. Also strangely it seems to happen nearly everytime ive been playing online poker, one more thing ill add is it seems to wipe my interent cache once its restarted. Now I have tested each memory stick individually with memtest and also the whole lot together, this returned no errors through many cycles, all temperatures are fine, under max load the cpu is about 54-56 degrees, the strange thing is the computer seems to run like a dream until the interruptions. I have a standard IDE HD as my main drive and a SATA drive as an extra drive, dont know if this would be a problem. I have also upgraded my bios to the latest thinking this may solve it, it didnt, and finally the only bios setting I have changed is the memory voltage to 1.9, the computer was already restarting before this but someone else on a corsair forum told me to do so before testing the memory. Any ideas ? Also I noticed a previous post about disabling automatic restarts on system error, how would I do this under my setup ? Thank for your help Paul