My setup is a Chenming 118-matx case with AMD Athlon64 3000+, MSI RS480M2, PQI 1GB DDR SDRAM, Gigabyte 6600GT graphics. The computer hangs while I'm playing Halo or Neverwinter Nights and I have to reboot. It doesnt freeze at the beginning of the game, sometimes I could play Halo for half an...