Stuck at memory testing post screen

Nikos_Kari

Commendable
Jan 3, 2017
23
0
1,510
Hi I have gigabyte GA-G33m-s2 motherboard and today I recieved a GTX760 so I wanted to test if it fits fine with the motherboard (so far I was with onboard graphics). So I turn off the psu disconect the power cord, draon all the power that's left and opened the case... Then I installed the card to the pci and after I was sure that it was fitting fine I removed it, CLOSED the case plug in power open psu and start my pc... The only problem was that when my pc opened it was stuck at post bios screen at testing memory (which passed) and 9mb of shared memory and that's it!!! Im stuck there!!. I have tried everything (change psu, remove all exept ram cpu, boot with one stick of ram or 2 or non, differnt hdd, and each time I was doing a change either I was still stuck there but with the correct amount of inserted ram or show a black screen when I start it, the only critical diference that I found was that if I connected an older key board (you know, the ones with round usually purple input before usb keyboards came out) it was going till memory testing and stuck there but with a shattered image along the way!!

WHAT IS GOING ON PEOPLE?!
I need awnsers please, I cant have destroyed my pc with only that action, thanks in advance