Question about HP Pavilion a420n PC Desktop
Check to ensure you Video Card (and all other cards) are seated correctly in the slots. You may have knocked it loose when changing your drive.
Posted on Apr 15, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
the leads from your MOTHERBOARD TO YOUR HARD DRIVE make sure they have a secure dust free connections and are not faulty or just replace them they could be faulty
if its a 40 pin flat ribbon type it will be the fist to fail
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
even something as small as a faulty power lead can cause you problems
computers need power and data travel through every working device and to have an end to be able work properly
make sure ram modules and cmos batteries have dust free secure seatings and cmos battery has charge some motherboards cmos batteries are soldered in
motherboard and a hard drive any leads between them will fail before your motherboard or your hard drive if its a flat ribbon 40 pin type IDE replace it this will be the first to fail
check all power and data leads make sure they have secure dust free connections
cd/dvd floppy drives need to have current go through make sure these drives are working
check you CPU make sure its securely seated and has thermal grease
hope this helps
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