test all leads that attach to your hard drive including electrical extensions, 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 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 ?
make sure the CPU central processing unit has thermal grease and a dust free secure seating
computers need 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
you might have to many programs running at one time putting to much stress on the cpu not having enough ram will do this
if you right click in the bottom toolbar select task manager applications you will see whats running also processes you will see whats ticking over if you see something running that should not be select end now you might even uninstall that program and some unnecessary programs
check your computer ram and cmos battery to make sure they are securely seated and the battery has plenty of charge
some motherboards cmos batteries are soldered in
hope it helps
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 dust free connections and are not faulty or just replace them they might be faulty a computer needs its power and data to travel through every working device and to continue its cycle and to have an end so any faulty leads will end up with a computer error also Click start control panel administration tools computer management device manager scroll to display adapters + to expand you might see a yellow question mark ? or exclamation mark ! or a red x right click select reinstall drivers you might have to remove your graphics card to make sure the socket is clean restart your computer the reinstall it this should activate found new hardware wizard if your computer came with a motherboard disk the drivers could be on it hope this helps you
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