Help!!!! Hi everyone. I have a GA-MA790FX-DS5 motherboard from Gigabyte. This mb is has a 790FX chipset and currently the hardware that is installed is: AMD X4 9950 CPU Coolermaster Orb Heatsinc (it's HUGE) 2x 500Gb Seagate SATA drives 2x 3870 PCI-e Cards in Crossfire 4Gb RAM Running Vista Ultimate 64-bit. Now, I recently got my hands on a new Phenom II X4 920 CPU and when I went to install it I suddenly had some issues. Firstly, the board did not pick up on the CPU. I looked on Gigabytes support page to see a BIOS update for the new CPU's...I flashed it and that did fix that particular problem but then some other weird things started to happen. Firstly, the puter would take a VERY long time to boot. A disturbingly long think it died it's taking so long to boot anount of time. When it finally did boot, the CPU was identified but then inexplicitedly the screen would go black and the PC would reboot (and again take that scarey and massively long time). Again, I looked on some message boards and the best I could find was a beta bios from Gigabyte to fix some issues with "some" of the newer AMD CPU's. Even with this new beta bios those issues still persist. The first thing that came to mind almost immediately was heat. But. I do have a VERY large orbit cooler on the CPU set at high, I am not over clocking and I have a good Antec case which has fans on the top, front and rear. Another thing though which has come to mind is possibly the power supply. I have a very good ps from Antec as well (650). But shouldn't the new 45nm CPU use less power and make less heat then the Phenom X4 9950 I have in there right now? The system worked perfectly again once I put the old CPU back in it. So, Techspot people I would gladly like to hear any suggestions anyone has...or if anyone else out there as had a similar issue with their rig and has a fix. Thanks for your help.