I just put together a "new" system with a boxed Intel Core2Duo E8400 (3 GhZ) CPU, Gigabyte P35-DS3L motherboard, ATI x600 graphics card, 500W Thermaltake PurePower PSU, WD 400GB HD, 2 GB Patriot Extreme PC2-6400 RAM. I say "new" only because the MB was bought 1 yr. ago, but just got all the parts together and built this thing. Here is my problem: I attempt to load Windows XP, or for that matter, jump into BIOS, and the system will hard-lock after a minute or 3. I swapped out RAM, Video card, PSU and still same problem. I then swapped out the CPU with a PentiumD 2.8 GhZ processor, and it has been running fine without lockup. OK, you say, "it is the CPU", which indeed may be the case, but my previous experience has been if the CPU is bad, it won't boot at all. I set the BIOS to "LOAD FAILSAFE" option, but still same problem with E8400.What do you think?