I own HP Pavilion Elite HPE H8 1010cs. Motherboard is HP IPISB-CH2. I bought new graphic card GAINWARD Nvidia GeForce GTX 970 4GB together with 600W PSU Corsair CX600M. First I tried my new PSU with my old GPU nvidia 550Ti. It worked perfectly. But when I replaced old card with new GTX 970, bios...