Hey everyone, this is my first post here. I've been building systems for years but I've finally come across a problem that has me stumped! This is a computer I've assembled out of some spare parts I had just pulled from a perfectly stable P4 2.2GHz system and some brand new ones: PC Chips P23G motherboard Intel Pentium D 915 (2.8GHz) ATi Radeon 9500 PRO AGP 8X Sound Blaster Audigy 2 ZS Platinum TDK DVDRW 16X 1x 1GB Kingston DDR2-533 Ultra V Series 500W ATX power supply WD 80GB PATA hard drive Seagate 250GB PATA hard drive Windows Vista Home Premium The mobo, processor, memory and power supply are all brand new. Here's my problem: I've been using this box for about a week now. I decided to give it a shot with some games: C&C Generals, CS: Source and LOTR: Battle for Middle-earth, to be exact. I can load all these games up and play for a little while, but after 15-30 minutes I'll get a BSOD or just a plain lockup. It also happens when attempting to watch DVD movies on this box. There is no overclocking on this system whatsoever. I even tried underclocking my RAM to 400MHz and my Radeon to 200MHz but that did not work. First of all, I tried reinstalling all of my drivers, and I stepped down to Catalyst 7.2 from 7.3 as I noticed a lot of people had BSOD issues with the 7.3 drivers. No success. Tried re-formatting with XP to no avail. Ran memtest overnight and tried Vista again, absolutely nothing. Replaced power supply with a brand new $75 unit, no dice. Tried switching to onboard sound and video -- still nothing. I decided I'd install Sensorsview because the mobo and CPU were the only things I hadn't checked. CPU temperature is at a cool 27 degrees, so that's not the problem. The problem is that my voltages are being reported as dangerously low. +3.3v reads about 1.89v, +5v is fine at 5.1v, and +12v is fluctuating from 6.8v (!) all the way up to 13.9v. I tried two other PSUs and got similar results. I'm thinking this is a motherboard issue, as it's a cheapo model. Can anyone back me up on this and perhaps recommend a somewhat decent LGA 775 board that supports both DDR2 and AGP? thanks in advance!