How do I fix my pc?
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.


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I've seen this problem before. You won't be able to boot from any media because the computer never gets to a point where it can post and allow you to choose what to boot from. It just acts like a dead motherboard.
I got the computer back to life by installing an inexpensive video card and connecting the monitor to it. In my case the computer was originally set to use built in Intel video. I continued to have the same problem after hardware changes for some time. I finally determined there was an incompatibility between the motherboard and the power supply. I was using an expensive power supply. When I replaced it with an old inexpensive power supply, all problems went away. I then put the expensive power supply into another computer with a different motherboard and it has worked with no problems for a long time.
If your computer has a video card installed, try removing it and connecting the monitor to the built in video on the motherboard.
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Hi, you guys are giving good advises. I completely agree with Mustang.
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