Hey everyone, I'm experiencing a problem running games. I'm running windows XP 2002 for OS and for hardware: P4 2.4GHz, L4S8A2 mother board, 512MB PC3200 RAM, GeForce 4 5200 FX. The problem occurs within 5 minutes or so of any high graphical game such as GTA III, SimCity 4, Half-life... The computer locks up and my speakers make a loud high-pitch ringing sound. I've un-installed/re-installed all the motherboard drivers and hardware drivers then updated all of them. I've swapped out my sound card and video card. To me, it sounds like i have a RAM problem but have not had a chance to buy a new stick. I was wondering if anyone has had this problem before and/or have ideas on what it could be. Thanks