"No Signal" shows up on my monitor even though the PC, keyboard and mouse are all on.

[Patryk_12]

Hello guys, so today i bought a new PC fan from Crossair, when i tried to plug it into the case i realised that the fan has a 3 pin connector and i only have a 4pin socket in my case, so i decided to put the 3pin cable into my 4pin socket, when i tried to turn on the pc, everything was working perfectly (the case, mouse and keyboard lights were all on, i could also hear the graphics card working) my monitor was turning on as usual, but then a screen popped up and it said "No signal", i tried restarting my PC, removing the new fan that i bought, and I changed the HDMI cable, i still can't find the answer to my problem, recently i was often getting this problem but after turning of my monitor for 20 seconds it was already working again, now i have no idea what to do :/ please help, thanks in advance

 

[scout_03]

did you try another cable from pc to monitor and could you send signal to another monitor this will help find if it is gpu cable or monitor .

 

[skitszo]

rig info?

onboard video?
graphics card?

try the onboard video port and then the graphics card port?

try pulling all your hardware off then re-seating them: memory/ graphics cards/ sata cables one at a time.

If you have onboard graphics try to use that and take your graphics card off to test.

 

[Patryk_12]

did you try another cable from pc to monitor and could you send signal to another monitor this will help find if it is gpu cable or monitor .

i changed the hdmi cable so its not the cable tomorow ill try to send signal to my laptop

 

[scout_03]

wont work to laptop screen try to send to a tv or ask a friend to test it on is monitor .

 

[Patryk_12]

wont work to laptop screen try to send to a tv or ask a frind to test it on is monitor .

ehh i cant ;/ thx for trying to help me though

 

[Patryk_12]

fixed

 

[scout_03]

what did you do to fix it .

 

[Patryk_12]

what did you do to fix it .

sorry for late answer, i cleaned my ram with the rubbers and it started working, but i think one of my ram sticks were damaged because it only works when one of them is inside.

 

[scout_03]

then you should memtest each of them for error .