New CPU heatsink, no display?

Hello all, today i recieved a new heatsink (Hyper Cooler Evo 212) and when i finished installing it i tured the power on everything looked normal, all the fans started spinning all the LED's lighting up but my monitor dosent turn on like it does when i normaly turned my pc on. i didnt do anything but install the backplate and the cpu cooler (+ heatsink etc) i raelly dont know what to do if think you have any answer to my problem please dont hesitate to ask. i really dont know what when wrong i didnt unplug anything and everything is in its right place, iv checked the vga cord and tested it on 2 monitors.
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  1. Check ram are correct in place - check gfx are correct in place - check psu and cables - maybe reset bios.
  2. correon said:
    Check ram are correct in place - check gfx are correct in place - check psu and cables - maybe reset bios.


    done all that, but still no luck i read somewere saying the backplate can cause the mobo to 'short out' any ideas?
  3. correon said:
    Check ram are correct in place - check gfx are correct in place - check psu and cables - maybe reset bios.


    done all that, but still no luck i read somewere saying the backplate can cause the mobo to 'short out' any ideas?
  4. ye maybe try install old cooler again to check for short circuit...
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