Hi, I'm running an Optiplex 390, i5 2400, 8 gig ram, gtx 970, and an evga 500w psu. Recently my pc has been chugging pretty hard (more than normal) and i wanted to check the bios to see if there's anything really in there i can fiddle with to get some extra boost. I enter the bios (bios A14) and i cant use my mouse but i can use my keyboard. Up, down, and enter work, but nothing to let me select a category, since I'd need a mouse for that. I've read up on it and I've seen posts about using a PS/2 mouse and keyboard, but my model doesnt have a PS/2 port. Am i stuck without being able to touch my bios at all? All help is appreciated