Disclaimer: not very knowledgeable about computers just average but my desktop pc comes on power wise but it doesn’t “boot” up meaning the sound isn’t the same and nothing appears on monitor. My first thought was graphic card. It it has 2 (I think it has 2 ports for) and I tried both. I changed cord. I tried on different monitor. I’m now kinda lost. I get a green light on pc at card reader but my cd drive won’t open manually which is weird. No light on front of pc but I don’t remember if there is one. I bought used and don’t even know what kind it is no stickers on front.