I recently cleaned my PC for the first time using compressed air and a microfiber cloth. I was careful, but I'm worried that I might have accidentally damaged something since now my PC isn't sending any signal to the monitor. I made sure it was powered down and unplugged when I cleaned it, but after reassembling everything, the monitor just stays blank. I checked using another device, which worked fine, and tried a different HDMI cable, but nothing is working. I'm worried I may have knocked something loose or broken it. Any advice would be appreciated!
3 Answers
It might help if you could share some pictures of your setup. That way, we can see where the cables are connected and diagnose the issue better.
First thing, do you have a dedicated video card? Make sure your monitor cable is connected to that, not the onboard video outputs on the motherboard. It's an easy mistake to make, especially after cleaning.
I'm not really sure what that means. Could you explain it in simpler terms for someone who's not very familiar with computer hardware?
If you can't post pics, it's going to be hard to troubleshoot remotely. But you should double-check all your connections, especially after cleaning—something might have come loose in the process.

I tried to include pictures, but it seems like I can't upload them here!