Black Screen On Startup

Blackscreen - computer whirring, lights on
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More about black screen startup
  1. Couple of thoughts

    RAM - Remove the ram and try each stick in the motherboard seperately.
    PSU - Try another power supply.
  2. Try your monitor and cable on a different PC to rule those out. Unless it is a laptop (you did not state) then try hooking a monitor to it....
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