Hello! Like many of you I have trouble with playing Sims 2 (same with Tomb Raider Legend and I think with all 3D games). Somewhere in the middle of intro video game stops with blank screen and PC doesn't respond. Sometimes(!) a few seconds after that monitor (LG Flatron L1730P) goes to standby with message '21,1kHZ/53 Hz Out of range'. Strange thing is that with 'freshly' installed graphics driver the game runs fine (so does TRL), but after second restart or shutdown (I can't leave PC powered all night) it stops with blank screen. It seems the system 'forgets' the driver although Device Manager reports OK. I'm sure I have the latest graphics driver correctly installed (as suggested by ATI) and DirectX 9.0c. I'm also sure there is no overheating or PSU (400W) problem, otherwise the PC wouldn't let play The Sims 2 at all. So I think there is some Windows problem? Has anybody had the same occurrence? Or maybe fix to this? I'm trying to find solution about a year (when I bought PC and Sims 2). I tested my PC on System Requirements Lab's website and it had more than enough power. I tried different drivers including Omega's. I tried ATI drivers with and without Control Center. System (DirecX readings): Manufacturer:VIAK8T Model:AWRDACPI Processor:AMD Sempron 2800+, MMX, 3DNow, ~1,6GHz Memory:510MB RAM DirectX VersionirectX 9.0c (4.09.0000.0904) Display: Name:Radeon 9550 Approx. Total Memory:256,0MB DirectX Features all Enabled, all tests were successful.