OK, here's my biggest issue right now. I'm hoping someone can assist me. I am having issues with random automatic reboots of my machine. My first thought was that it was potentially a power supply issue, so I replaced my 450 watt supply with a 580 watt supply (unfortunately I do not recall manufacturer of either at the moment, I'm sorry). That didn't solve the issue. I pulled out my IEEE 1394 card, as I'm not currently using it, as well as a bracket card that came with my motherboard that provided a TV-out, as my video card also has a TV out. Still no better. I can go 4 or 5 days without a reboot, then have reboots within 18 hours of each other. One would then think that the obvious culprit would be a memory issue...and I thought/think that as well. I ran a memory tester overnight, and when I got up this morning, it showed no errors after 7 passes. I'm honestly stumped. The reboots began concurrent with upgrading RAM, and I was certain that the memory tester would turn up something overnight. I've also cleaned out the heatsink and fan for the processor and reapplied fresh heatsink compound; my processor runs, at it's hottest, at 36 Celsius. I have a mess of minidump files if anyone can parse them...I tried last night, and I simply can't make heads or tails of what the Windows tools are telling me. I can attach them as a zip archive immediately on request. Here's my system hardware; my PC is more a media center type machine than a heavy duty gaming machine...I use it mostly for music and video editing, photo editing, et cetera. I don't overclock. MSI K7N2G-L motherboard AMD AthlonXP 1800+ w/stock heatsink/fan Linksys LNE100TX LAN card MSI Geforce4 MX 4000 AGP video card, 128 MB Seagate 40 GB Hard drive, ATA100 (for OS/applications), primary master Seagate 160 GB Hard Drive, ATA100 (data), primary slave Western Digital 320 GB Hard drive, ATA100 (data), secondary slave LiteOn LH-20A1H DVD-RW DL Drive, secondary master SoundBlaster PCI 512 PCI sound card 3 x Patriot 512MB 184-Pin DDR SDRAM DDR 400 (PC 3200) Anyone out there able to help me?