ok well i just rebuilt my pc into another case and everything is working except my diamond viper 770 ultra (TNT2) makes crazy colours and lines as soon as i turn the machine on.
I can't see a normal screen at all...just crazy lines and colours.

Anyone have an idea on what this could be ???

It works fine with an S3 Trio pci card i used....so i went into bios but could find anything out of the ordinary.

Maybe i missed something in there.

My mobo is an AOpen AX6B+

this system worked fine in my old case.