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Power is ok. It turns off and on but nothig comes on after computer is powered on

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Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electic extensions or just replace them they are probably faulty a computer needs its connections to continue its cycle and have an end so any faulty leads will end up with a computer error hope this helps
another possible reason could be a memory dump you might be running to many programs at the one time also you might not have enough ram random acess memory to check what is running when your computer is running scroll to the bottom toolbar right click select task manager applications and processes if you see something you dont need running select end now to check how much ram you have click start right click om my computer select properties you will see all of your computers details
hope this helps

Posted on Apr 02, 2011

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Posted on Jan 02, 2017

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