i'm having a strange problem with a new machine i assembled for a friend. i give the config below p4 2.8 Ghz(HT), Asus P4P800-VM mobo(BIOS-American Megatrend), S/S PUMA 80 GB, Hynix 2*256 DDR 400 RAM modules. OS is Windows XP. now the problem is that when i enable HT from the BIOS, and do some multitasking like writing a cd and doing some c programming, the machine hangs. but the problem vanishes when i disable HT support from the BIOS. i cant make any head or tail of it. no upgraded bois of the mobo has been released, so i dont think it's a bios conflict. help me guys!!