Hi everyone, this is my pc:
i5 3570k
7970 GHZ
16GB ram
256gb 840pro ssd

I managed to install the latest ML 10.8.3 easily from extarnl HDD with UEFI into the SSD, now when I boot into it seems to work fine, I can hear the funky wellcome tune playing, I can even see and move the mouse cursor (which stops at screen edges so the resolution should be right/supported), but all the rest of the screen is white and I can't do anything.

I tried booting with the integrated gpu but the UEFI boot screen doesn't even come up (stuck at black screen with blinking prompt)

Any suggestion?