I have been having trouble with my computer when I turn on my computer it starts but won’t display anything and my keyboard and mouse don’t turn on and when I try to power it of using the power button it does nothing even when I hold it for minutes it feels like I have to turn it off using the switch on my psu everything looks normal when I turn it on except my gpu fans alternate on and off and my motherboard doesn’t have a beeping system so I don’t know how to tell if it’s my gpu, cpu, psu, ram etc. I have no clue and I don’t know how to check any of them either I don’t have a multimeter to check my psu I have took everything out of my pc put everything back I don’t know what to do please help I don’t want to have to replace my whole pc especially right now when a 400$ graphics card cost 1000$