no screen output

This weekend i started to assemble the CustoMac Pro as per the buyer's guide with the below listed parts. After finishing assembling i wanted to start install the os, but i did not get any picture, only the mobo showed 55 and restarted itself after 10-15 seconds repeatedly. After some googling i...

I have managed to install mountain lion 10.8.1 and everything seems fine but I cannot get sleep to work. I have updated my bios on asrock z77 pro4-m with a patched bios which I found on the tonymacx86 forum and then I deleted the nullcpu kext from S/L/E but still sleep doesnt work. When i choose...