Test your PSU power supply unit or replace it if your power supply units fan is not working your PSU is faulty
http://pcsupport.about.com/od/toolsofthetrade/f/powersupplytest.htm
One bad lead can cause a computer to continue on a cycle of restarting or to shutdown or fail to detect/ boot up a computer hard drive
Test all leads that attach to your hard drive power and data cables 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 could be faulty make sure all leads that are attached to your dvd\cd floppy drives have secure connections and are not faulty or just replace them they could be faulty computers need power and data to travel through every working device 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 electrical or fan lead can cause you problems
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 electrical power input and extensions make sure they are securely seated even the cd/dvd floppy drives need to have current go through make sure these drives are working
also check the Cmos battery and computer RAM modules make sure they are securely seated with no dust built up or in the sockets on some motherboards cmos batteries are soldered in. Check you CPU central processing unit make sure its securely seated and has thermal paste it might be getting to hot the thermal paste will help disperse the heat Thermal compound is a sticky paste that is placed directly onto the CPU.
http://www.hardwaresecrets.com/article/Thermal-Compound-Roundup-February-2012/1490 Allowing for a more direct heat transfer between the CPU and HEAT SINK and preventing air gaps from forming between the CPU and heat sink. Hope this helps.
Keeping the fans clean is especially important, because the fans blow out hot air and bring in fresh air to cool down the laptop.
Fans attract dust, however, which can slow them down, resulting in a hot laptop.
If the laptop overheats, vital parts can cease functioning altogether.
Consequently, keeping your laptop's fans clean is crucial.
The fan speed on a laptop can determine how it operates consistently and reliably.
You can slow it down or speed it up, based on the circumstances.
For instance, slowing down the fan speed may be useful in reserving processes or during a prolonged slow time.
Speeding it up is beneficial in keeping the laptop cool during ongoing use or high-traffic times. For the long term, find a happy medium for regular use, so you won't "psyche" out your computer by constantly adjusting the settings.
Click on the Start menu and select "Control Panel." Next, choose "Performance and Maintenance."
Select "Power Saver."
To slow the fan speed, locate the slider next to "CPU Processing Speed" and slide it down by moving across to the left.
To speed up the fan, move the slider to the right.
Press "Apply" and then "OK," if prompted.
Hope this helps
184 questions posted
Usually answered in minutes!
12 Questions
12 Questions
7 Questions
5 Questions