Hi I recently upgraded my motherboard to a Biostar T series TA790GX 128M motherboard. I'm trying to run it with an AMD athlon X2 processor running at 2800 Mhz, a 2gb Patriot DDR2 ram running at 800mhz, a Radeon HD 4650 graphics card, and all this is being powered by a 450 watt power supply. I hooked everything up correctly but when I try to start the computer it will either sit there with a blank screen, or it will go through bios and bluescreen whenever I try to enter windows or boot the operating system (windows 7) from a disk. Whether it will sit there with a blank screen or do anything else happens regularly. So basically it tries to start up and fails or it doesn't do anything at all. I tried troubleshooting this with my uncle who has been building computers for over 20 years and we tried removing each piece of hardware (Graphics card, disk drive, hard drive ect) to see if there was an incompatability. We even sent the board back and got a replacement, so far I've gotten the same results. However my uncle suggested to me that it might be an incompatability with my current memory. I'm at my wits end here trying to figure this thing out and I'm hoping you guys here can give me some insight into what the problem could be, before I go buying new memory only to have that not be the problem.