I recently picked up a Cyberpower PC from Best Buy and started the setup. After the setup process, it began updating but didn't show anything on my monitor for quite a while. After about an hour waiting with the PC powered on, I attempted to turn it off, but the power and restart buttons didn't work. So, I switched off the power supply, which turned everything off and on. Then it showed a Windows update screen at 98%, but when it hit 100%, the screen went black again, and I had no signal, even though the fans were running. I'm not sure what to do next. Best Buy offered Geek Squad assistance for $170, but I'm hesitant about that right now.
4 Answers
You do have a 15-day return policy, so using that is smart. If you feel brave, make a Windows boot USB drive and reinstall Windows from scratch. You might need to check if something came loose during shipping, like the RAM or GPU. Just be careful if you're going that route.
Honestly, I'd suggest returning it ASAP. If you can, it sounds like a hassle but you'll probably be better off without it. Trying to fix a brand-new computer shouldn't cost you anything. Just go back!
Returning it is tough since I can't drive an hour to the nearest store, and I had to get it delivered.
Make sure your video card is secure and only connect one video cable to your monitor. If you have both HDMI and DisplayPort plugged in, it might think there’s multiple screens. If you have other HDMI ports on the PC, test each one to see if one works. As a last resort, creating a USB Windows installation drive could help you start fresh with a clean install.
How do I change the boot drive if I can't get to BIOS?
It's wild they want you to pay for a fix on a new machine! My advice is to return it and get something else. You shouldn't have to deal with this hassle right after buying it.

That sounds tough! How can I find out my Windows key if I’m locked out? It just goes straight to the Windows update screen.