INFO:
p4 2ghz
512 ddr ram
intel mobo (dont know what model)
integrated intel POS graphics card 82815
XP at first now slackware

my mom bought me a Dell POS Dimension 2350 (i know thats part of the problem). ive had it for about a year and a half. a month ago i started noticing a lag when i have many apps open (no error messages). sometimes when i would play games either my comp would lag so bad or it would shut down. after a while it was getting really annoying so i booted from the cd and tried to reinstall windows. as the drivers were loading my comp shut down. so i d/l, burned and installed slackware 10. at first things were going well but when i tried to compile wxpython my comp shut down. later when i ran the makefile on wine my comp also shut down. i came to realize that whenever i would run something that required a lot of cpu work my comp would shut down. when i check mail, chat, or get on the net i would notice a lag but not that bad of one. i dont know whats wrong with this thing. its still under warranty but my mom and dad wont ship it back. they think that i have installed kazaa or some bs virus but i havent. any help is appreciated.