Heat sink and fan seem to be in good shape, but one plastic catch, holding fan and heat sink to CPU, is broken. When I released the remaining 3 catches, I discovered some kind of paste between the CPU and the aluminum heat sink. I am guessing this is heat sink paste. My question is: Do I need to replace this old "paste", or just add some more. If the old paste needs to be removed, can I safely scrape it from the CPU and heat sink with a razor blade or should I use some kind of solvent.
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open your pc panel, look for the heat-sink fan over your cpu(processor). there is a small fan over it and if it is not spinning your PC will not boot. could be a wiring issue where the wires(white/red usually) are broken or not connecting to motherboard good enough. check those but be careful no to break wires or connections. you may need to replace the heat sink module. if any capacitors on motherboard are swollen(little cylinder looking objects with + mark on top) will indicate overheating and motherboard may have failed. if fans spin on heatsink, then pc boot file may be damaged where then a shop will cost to fix it. fans will be the cheap fix else$$$
OK, that means either your heatsink is bad or the Thermal Paste that goes on the heatsink and cpu has either dried up or is too think to keep the unit cool. It can overheat.
On a desktop it's easy to get to. Remove the power cord, remove the case and turn the computer on its side so you can see inside. The heat sink will have a fan on top of it. Remove the screws from the fan and unplug the fan, then remove the heatsink by lifting it out. Sometimes the CPU will come out with the heatsink. Take a small flat head screw driver and carefully pry the cpu from the heatsink if it's attached. The cpu has lots of little prongs or pins on it and it sits in a slot that will accomodate the pins. There is a latch that allows you to put the cpu into the slot that you lift up to place it back in, then close the latch one you have the cpu in place. Put a good coat of thermal paste on the cup and heat sink, put it all back together. If you still get the message then you will need to replace the heatsink.
Look on ebay by just putting in your brand and model of your computer followed by heat sink.
Easy Fix.. Computers over heat because either a fan is not working, Dust has clogged the vents around the fans, CPU and Heat Sink or the Thermal Paste around the CPU and Heat Sink has become hard or too thin to keep it cool.
Remove the cover from the computer and set it aside then turn the computer on. When you hit the power button to turn on the computer make sure you hear and see the constant blowing of the fans. There will be a fan that is on the Power Supply where the power cord plugs in and a fan on top of the CPU and Heat Sink. If not, replace it. If the fans are ok get a can of compressed air from a local computer store and blow out the dust from the fans, power supply and all throughout the computer. In order to apply Thermal Paste on the CPU and Heat Sink you will have to remove the fan that sits on top of it and is normally secured by screws or some type of latching device. Once the fan is removed you can remove the heat sink and it too will be secured by screws or a latch catching device. Clean the old paste off the heat sink and off of the area it sits on. Apply a fresh coat of Thermal Paste to both and reassemble. Thermal Paste is available at local computer stores for under $20
The CPU cooling fan usually sits on top of a heat sink which is held tightly agaist the core of the CPU by the clasps you refered to. It soumds to me like the CPU has oveheated and will only function for a few seconds. If it's a fairly new CPU, you may be able to buy one online at places like http://www.tigerdirect.com. If it's an older model, you will have to try & find one at places like E-bay.
If you install a replacement make sure the CPU fan/heatsink clamps the CPU flush against the heat sink (apply a thin coating termal paste to the top of the CPU core).
NOTE: If the plastic clamps attached to the motheboard which hold the fan clips are broken - forget it! A new CPU will just ovehat again.
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This is an indication of overheating within the PC. Open the PC case and clean all the air vents. Take the heatsink and fan off the CPU and give it them a good clean. Put the heatsink and fan back on to the CPU and start up the PC. check that the fan on the heatsink is running smoothly.
Also, make sure the vents on the power supply are clear and the fan on the power supply runs well.
If you go into the BIOS setup, you may be able to monitor the fan and the CPU temperature.
You can find professional cleaning solution products at any good computer parts store, or you can rubbing alchohol (the less water content the better) use a lint free cloth like the kind to clean eye glasses.
The best thing you can do is replace the fan itself with a like kind of shape and size. I usually do this by going to a computer store with the old fan and matching it up with the ones they have in stock, or measure the size in milimeters and buy one on line. The fan is held on by 4 screws and it is much easier than trying to remove the heat-sink and take the chance of damaging the motherboard. You can just screw the new fan to the old heat-sink and you are done, plug it in and insure the fan is blowing in the right direction and you are done. Good Luck, RAC
Yes, some do come with push pins like that instead of screws so that it is easily removed and installed also. Usually the push pin ones are cheaper. The cpu and heat sink are compatible by cpu socket type.
After the notebook shuts down do not turn it back on for 15 minutes and then test it again. Will the notebook work longer if you let it cool down for a while? Isn’t it hot if you touch the bottom? Can you hear the fan running? Most likely you experience a laptop overheating problem and it would be fixed by cleaning the cooling module – the heat sink and the fan. The notebook processor produces a lot of heat when the notebook is turned on. The cooling module helps to keep the CPU cool when the laptop is working. The cooling module includes two parts: the heat sink and the cooling fan. The heat sink is attached to the CPU and helps to conduct the heat from the processor to the radiator. The cooling fan blows on the radiator and helps to disperse the heat produced by the CPU. The laptop will overheat if the heat sink radiator is clogged with lint and dust or if the cooling fan stopped spinning. If your laptop shuts down after some time without any reason and warning, check if the cooling fan spins. Usually it makes some noise and you can hear it. If the fan works fine, then check if the heatsink is clogged. In some cases you can clean the heat sink with compressed air, just blow inside the fan openings on the laptop bottom. If the heatsink is completely clogged, then it is necessary to remove the heatsink for cleaning.
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