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Why wont my computer screen turn off anymore?

Why does my home built computer turn on but with a blank screen?

  • I'm not sure why this happens, i just recently built a gaming computer and all the fans and LEDs turn on inside the computer. Here are the specs my computer. - Asus Motherboard - 2x2 GB Sector 5 RAM - NVidea Geforce 470 video card - AMD phenom black edition 3.2 GHZ cpu - Cooler Master chassis - Corsair 750 Watt power supply - New CPU Fan (Took off the one that came with the CPU and replaced it with better quality one) - 1TB HDD SATA (forget the name of the company, threw the packaging away) - Lite On cd disc writer, reader Please help, I have tried my computer with multiple monitors and they both have the same problem, my gaming mouse and keyboard don't light up as well and it doesn't even make it to the BIOS system setup screen. I am also having trouble with my speaker, it doesn't give me beep warnings on bootup, so therefore i cannot tell what it wrong. I've tried taking the ram out and reinstalling the motherboard. I want to have my computer finished as fast as possible. Thanks

  • Answer:

    did you install the proper amount of thermal paste..?

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Does your hard drive go through its boot sequence? If not it may indicate that there is a P.S. problem... You might start by unplugging absolutly all hardware. Everything that is not needed to get to BIOS... Then, if the machine works - slowly re-populate the machine and check it after each new addition...

If you're getting nothing at all, chances are you have a power supply problem.

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