My little brother just bought a MSI 790FX-GD70 board, and amd phenom 2 x4 processor from new egg and I was going to use an machine i had sitting around to toss them in. The first thing I notice was the old ram was ddr 2 so I pulled two one sticks from my machine and they are consair xms 3 ddr3. The first time i tried to boot it up I got an error that read cmos settings wrong / cmos date/time not set. So I read up on the error and thought I may have found a solution and I was going to work on it today and when I went to boot it up it read the unbunto disk but wouldn't install. So I reset it and now it will boot to the mobo main screen and then says please insert a boot able disk and restart system. I have tried my windows xp and windows 7 disk with no luck. And now it wont let me even get into bios. I don't know that much about hardware, I guess I got lucky when i built mine and everything just seemed to work. Thank you all much for helping out. any info will be useful.