Basically bought a 7870 Tahiti for my system; i5 2500k 8gb ram 650w modular BeQuiet PSU After installing it system would not Boot, it turns on but will not boot, all fans are spinning etc. So rang up Aria where I bought it from, they said my Bios needs updating. Fair enough, took out the GPU connected my monitor up to my mobo ports instead. System works beautifully. Sure enough there was some updates for my motherboard. Installed, put the card back in and now back to square one. Machine is on, but hasn't booted and is just sat there fans spinning. Help?