I have Asus m11bb. A10 Apu 8gb of ram. I just bought an amd r7 260x gpu and 750w psu to make sure I could run the gpu. Well now that I installed them my pic doest seem to want to work. I start up the pc as usual and it does the Asus start screen, but since the install it just says, "reboot and select proper boot device or insert boot media in boot device and press key". And for some strange reason I can't access the bios. I go to press f2 or delete and the screen just goes black. Please help