On Feb. 23, 2007 I purchased your 430W power supply. Last night, however, I turned on my computer and it tried to boot for about 1/2 a second and then shut down. The led on the motherboard was lit but nothing else was happening. I took it into Circuit City to be tested and they said that the 5V rail had an output of 6-1/2V. It may have damaged my motherboard but withoput a new power supply, I'll never know. Since there is a 5yr warranty on this power supply, will you replace it?
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 are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error
hope this will help
don
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