Question Pc won’t display and gives 1 beep then 2 fast beeps

Jun 12, 2019
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The graphics cards fan and lights are on so it works but when I boot it doesn’t display? This pc has run perfectly before. Any ideas or need more detail?
 
Jun 12, 2019
4
0
10
Only thing I did was clean out dust and stuff but I put everything in it’s correct spot and plugged in properly. The psu shouldn’t be bad as it was working a few days ago before this happened. I’ve had it for around a year so it should be good. Also no overclock or anything was running which I think would cause this no display issue. Thank you