Hello, I have done a clean install of vista ( after it was running fine for 2 weeks ) and upgraded immediatly to windows 7 with the upgrade option. Now the system is freezing randomly, sometimes when I play games, but sometimes also when I just visiting websites. The only thing I have figured out was that Windows 7 was freezing when creating restore point before installing the windows updates. The only thing I see on the moment is it freezing, is something like a screenshot on my monitor. The keyboard light and the mouse light is going out and I can do nothing, just the screen is there and the Harddisk is also stopping. The only solution is to do a manual shut down because when I do a reset the systems hangs on starting windows screen sometimes. Here is my setup of my computer : Antec Three Hundred Ultimate Gamer Case Gigabyte 1156 GA-P55-UD3R DDR3 Intel Quad Core I5 750 Corsair DDR3 1333MHz 4096MB XMS3-1333 Samsung SH-S223B DVDRW SATA 22x Zwart Western Digital 1TB Caviar GreenPower SATA II 32M Sapphire ATI HD4890 1024MB Samsung 2233BW 22" DC 3000:1 bk Glossy 5ms VGA Corsair PSU TX ATX 650W 24P 12cm Fan V2.91 I already checked the temperature and the maximum temp is 30C.

Hi Dries20, You may update the BIOS and the hardware drivers for Windows 7 first. If the issue persist, I would like to suggest you temporarily uninstall the antivirus program to check the issue. Please make sure that you have the installation file to reinstall it later. If it does not work, I also would like to suggest you test the issue in Clean Boot to determine if there is a software conflict. Good luck!Arthur Li - MSFT