When I start up the PC, the lights and fans turn on however the keyboard, mouse, and monitors do not work/display anything. Every blue moon it starts up fine given a good time for it to work (still rarely). I have tried restarting CMOS by removing the battery for 15 minutes, using one RAM stick at a time, using integrated graphics only, holding the power button with the psu unplugged, and just about everything except bench test b/c idk how to. This has started in the last 2 weeks and before that everything was working just fine and I havent switched anything out or what not. Im starting to think that it is either the hdd or the psu but I still have no clue it could be something totally different. When I used 1 RAM stick at a time, it has worked only twice and has not worked since (I have tried every slot with all 4 sticks I have). Any input is appreciated! This things a pain in my side I just wanna game.