Having problems with your PC Desktops ?

Truth be told my friend took it apart w/out the service manual and put it back together and now it overheats. The original problem is the techs at Staples said my mouse went crazy and still is.

Answers :

Could be the heatsink/fan combo that sits on top of the processor, hasn't been installed correctly. And/or the old thermal paste wasn't removed, and new thermal paste put on. If a thermal pad was used by the computer manufacturer, it can't be reused. These are junk. Plus I hope the wire for the processor fan was plugged back in. It either goes to pins on the motherboard, or to a connector from the power supply.

It could also be, that one or more computer case fans, haven't been plugged back in.

Computer case open, and computer unplugged from the surge protector, observe what looks like a fan in the center. (Not trying to insult your intelligence, just like to give a full detailed answer)
Also, here is a link to Tigerdirect.com, and an example of an average heatsink/fan combo,

Should you decide to reach inside your computer, I caution you to touch the metal frame of the computer case, first. This will relieve your body of Static electricity.

If you wish, you can see if this little fan is spinning when the computer is turned on. Keep your hands out, plug the computer into the surge protector. Turn the computer on. See if the fan spins. IF not, shut the computer down normally.

If it is spinning, observe the computer case fan/s. See if they are spinning. No? Time to shut the computer down, and see where it/they connect. They may also connect to the motherboard, but most likely they connect to the power supply.

Hopefully the computer is clean inside. If not, this would be a good time to buy a can of compressed air for computers, and blow it out.
(Computer unplugged from surge protector)
This would be a hard one to trouble shoot without the computer in front of you. Depending on the manufacturer of the motherboard there is usually two or three fan power plugs on it. One is marked CPU and is usually on the top edge of the motherboard, the CPU fan has to be plugged in there, the others are usualy marked CHAS, SYS or MB for the accessory fans in the front of the computer, if it has one, and sometimes another for a fan in the rear of the computer. These plugs usually have three pins each. two wires for power for the fan and an RPM wire for the motherboard speed readout on the computer screen. As for the mouse going crazy, try and uninstall it and then reinstall the drivers. This will sometimes correct the problem, or buy a new mouse, they are cheep. If that doesn't cure the problem then there is something more seriously wrong with the system. Good Luck, RAC
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