Question How do I fix my pc?

[Jonathan17177]

I tried building a pc and was successful for the first week. I was running elementary os and tried to instal a WiFi adapter. I changed some settings and today I tried turning on my pc, it turned on but I get no video output. I’ve tried everything including changing ram, cmos, etc. I don’t know what else to do.

 

[popatim]

You don't even see the message with the Option to enter the Bios?

 

[Jonathan17177]

No not even that I just see a black screen