Lenovo laptop shutdown suddenly after working for a while
I have a lenovo laptop, 3000 N100. Recently it has a problem which it
shut down by itself after I use it for 20 minutes. After the shut down, I turn it on and this time it work only 2 minutes and shut down by itself.
I open the back and watch the laptop run. I notice that the cooling fan did not run at all.
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Re: lenovo laptop shutdown suddenly after working for a...
Hi James, replace the fan or If it's still under warranty have it serviced. Suggest you stop turning it on until the fan is replaced. It could be the fan cooling the CPU. You don't want it to fry.
The shut down process is normal when over heating is detected by the system.
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Test your PSU or replace it if your power supply units fan is not working your PSU is faulty
One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive
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 connection and are not faulty or just replace them there probably old and faulty 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 are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error
Try blowing out any dust from around the fan with compressed air. If the fan is turning on and off a lot, this could be normal, depending on your processor, but if the system just shuts down fully and randomly, it would be a heat issue. The CPU is overheating and the failsafe mechanism is to instantly shut your computer down. The only way to avoid this is to raise the CPU shutdown temp in the BIOS settings, or if you can access the CPU, remove it and apply new, quality thermal grease. Also, ensure the fan is operating correctly during use and dont block any air intake or exhaust ports.
OK, the thing is, if the fan is not rotating at all, you will need to replace it. The problem related to the computer shutting down, is the fact that the CPU overheats, and then shuts down the computer to protect the system components.
SO, if the fan actually rotates, you will need to clean the fan from all the dust particles collected on it. If the fan does not rotate at all, you will need to replace the broken fan.
A common problem with all laptop is dust. Sounds like you have 5 years worth of dust stuck in there. You should get a can of compressed air and blow though every vent you can! You want to loosen the dust that's in there and possibly try to blow it out and/or get it closest to the vents.
After that you should take a vaacum cleaner and **** out all the dust you can!
Dust inhibits air flow, alot! Its the number 1 killer of old computers.
if it just shuts down suddenly without logging off and doing a normal windows shutdown, you probably have heat issues to to dust clogging your heatsink. Using an air compressor at 80 lbs (canned air won't have enough pressure), blast air into the opening/grille where hot air is exhausted from the laptop. this will likely shoot a cloud of dust out of the bottom of the laptop. Shoot air into the fan intake on the bottom of the laptop next. If the laptop still shuts down suddenly, check that the fan is actually working (feel hot air blowing?) - maybe the fan is dead.
Before anything make sure the air vents are not clogged. You can used canned air to blow out the air vents to make sure there is no buildup of dirt or dust cause that can cause overheating problems.
Look to see if the CPU fan turns on at all during the whole bootup process. The CPU fan won't run all the time but as long at its turning on at all during the bootup process then you know the fan is good.
If the fan never turns on at all and the laptop gets very warm or hot and then shuts off then the motherboard is bad cause that means to much voltage is going thru the motherboard and it can't cool down properly.
Hope this helps. If you can't physically see the fan turn on then where the cpu fan is located put your hand there and see if you can feel air flowing thru, hopefully it won't be hot air but slightly warm.
If you need any other info, let me know and I'll help you further.