Thanks for taking the time to read this and hopefully giving me some insight into this thoroughly brain busting problem I'm having. First off, system specs just in case mine refuse to show after creation of this account: Athlon 1400mhz processor Biostar M7NCD mobo 256 DDR 2100 Centron Ram GeforceFX 5200 400 PSU I'm running Windows XP Pro SP1 updated completely as of Dec-17-2003, Nforce Drivers version 3.13 with NVidia IDE SW Drivers installed, and NForce 53.03 Display drivers (uncertain as to whether this is repetitious). Fresh install, Winrar and Adobe being the only programs installed as of now. The problem is this, the computer will, without warning, error, or BSOD, lock-up (freeze, hang, whatever the term is now) randomly. No Event messages, and no certain activities being performed, or over all time elapsed. I had tested memory with memtest36 when I had 512 installed, found one stick to have errors, and removed it. Problem still persists. I have monitored voltage, and there is some fluctuation, but not enough that I should worry on it I believe (within +/- .03 volts) Memtests runs clean now. Before, and now, I had the highest drivers available for the board, and graphics card, and have heard that there is some stability issues with various hardware types. Could this be the problem, and if not, please provide some other possibilities. Thanks again.