Ok wasn't sure where to post this as I'm a total noob and have just about reached the end of my tether with my pc. I would really appreciate any advice (other than hitting my pc with a sledgehammer) that could help fix my problem. To cut a long story short my PC locks up during any one of the following activities; 1. Burning a Long DVD (i.e. more than 2 hour long film) 2. Playing 3d Accelerated games (i.e. GTA San Andreas) 3. Playing Visualizations in Winamp I have spent a lot of money on various hardware upgrades and still the problem doesn't go away, my spec is as follows; Asus A7V880 Mobo Athlon XP 3200 Antec Neopower 480W PSU Zalman CNPS7000B CPU cooler 1 GB 3200 Ram HIS ATI Radeon 9800 Pro GFX 1 x Lite-On DVD RW 16X 1 x Artec CD RW 52X 1 x S-ata Seagate 160gb HD 1 x IDE Western Digital 80gb HD I can't actually figure out what the problem is, I've tried re-installing windows in a different directory as well as upgrading the bios and doing virus and adware scans. Still I get the same problem I can play visualisations in Winamp for maybe 10 minutes solidly before the whole thing locks up, pretty much the same thing happens with games such as Half life 2 and GTA SA. The comp also locks up round about the 68% mark when burning a long dvd, maybe there is more than one problem but this is starting to make me lose sleep! Any advice because I'm stuck and I've just ran clean outta ideas, you are truly a guru of PC fixing if you can sort this one out, any help is greatly appreciated, thanks.