I have purchased a new pc. Configuration is given below: Intel Pentium 4 2.66GHz Intel Original 915GLVG Motherboard Hynix 256 MB x 2 RAM Seagate 80 GB SATA HDD Sony DVD ROM Sony CD-RW Sony FDD Navtech Cabinet with 450 Watt SMPS and an extra cooling fan Microsoft Multimedia Keyboard Microsoft Optical Scroll Mouse Pinacle PCTV Rave TV tuner card HP PSC 1410 Printer D-Link Internal Modem My problem is: My computer shuts down when I paly MotoGP or WWE RAW. It stops responding if I immediately switch on the PC. After a while (about 10 mins) it runs normally. There is no problem if I run only softwares. All the games ran cool in my old Pentium III machine. I shared RAM upto 32 MB to motherboard but the problem remains. Please help.