laptop computer or a desktop ?
test all leads that attach to your hard drive including electrical extensions SATA/IDE
the leads from your ((motherboard to your hard drive)) Sata/Ide make sure they have a secure connections and are not faulty or just replace them they could be faulty make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty or just replace them they could be faulty ?
even something as small as an electrical extension or a faulty fan lead can cause this problem
a computer needs all of the data and electrical current to travel through every working device and to have an end for a computer to be able work properly
make sure your graphics card is securely seated with no dust in its socket
if you physically remove your graphics to check the socket card restart your computer this should activate found new hardware wizard
hope this helps you
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/ boot up a computer 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 electrical extensions or just replace them they could be 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
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