'Battery Alert' appears before the 'press 'ESC' key for Start-up menu.', however, ' Cooling Fan Alert' appears after 'press 'ESC' key for Start-up menu.'

Intel Spec for your processor: http://ark.intel.com/products/52224/Intel-Core-i5-2410M-Processor-3M-Cache-up-to-2_90-GHz

Look at the "Package Specifications" section.

I5 2410M

Sockets Supported  FCBGA1023, PPGA988

Thanks a lot,

If  I want to downgrade the quad-core to a duo-core but I don't want to take this thing apart and find the CPU won't fit the socket. What a job! How can I find out what kind of socket is in my mobo?

1. The fan needs to be replaced.
2. Both ZP-360 and HC-151 are not sold where I live, so I'm not familiar with either.

I checked with a friend who build computers and he has not heard of either ZP-360 or HC-151 so you need to use your own judgment as which is best to use.

3. then clean both the heat sink and CPU as best you can with a clean cloth to remove the thermal paste. Repeat wiping the metal surfaces several times with a fresh piece of cloth each time until you see no residue on the cloth. Then apply the thermal paste.

Let me know if the new fan solves your problem.

Thanks a lot,

1- This below in bold sometimes happens, I really cannot be able to determine when it happens, although my hard efforts of monitoring my notebook.

The sound coming from my fan looks like the sound of a shaving machine while  shaving."

As long as my fan make a loud sound while spinning, and air blown out is little,  I think that my existing problem with CPU temperatures, and error appearing in the start is related to fan.

2- Have you been familar with The Heatsink Compounds 'ZP-360' ?

Or niether have you been familar with The Heatsink Compounds 'ZP-360', nor you have you been familar with HC-151. You only have been familair withThe paste I use is Thermaltake TG4.

The merchant will pay the HC-151 with $3 for me instead of $5 since there is a rest of amount of $3 for me is left with him. So, he agreed to sell that thermal  me for $3, so do you think it will make difference other than myHeatsink Compounds 'ZP-360'used before ?

3- I was suggest to use medical spirit as a substitute for Isopropyl alcohol- 99%.?

But, I only found medical Spirit which doesn't seem to have any alcohol in it at all as described in its bottle. I don't know if there are other kinds of medical spirit which include alcohol

This means you don't clean up your fan surfaces or blades. If there is hard dust which cannot be removed until it get wet. What material used to let dust be wet.

Water.

Alcoholic drinks are not allowed to be soled, but if I find any, do you think it can be any  alcoholic drink made from Grapes.

Grapes, yes - White colored wine if you can find it.

I don't think  Isopropyl alcohol- 99%??? can be drinking.  No it can not.

Why do sometimes (even if my notebook is not in a high load, and it is in stable situatio

n on a table) I hear the fan is spinning with a loud sound, however, the air blown out is not as much as the sound comes from the fan while spinning.(I.e. there is loud sound, however, there is a little air blown out) I don't think this is related to the way of thermal compound I applied, however, it is related to that fan might be faulty. You have another view?

"The sound coming from my fan looks like the sound of a shaving machine while  shaving."

Bad bearings can make odd noises.

As long as my fan make a loud sound while spinning, and air blown out is little,  I think that my existing problem with CPU temperatures, and error appearing in the start is related to fan.

The fan is defective.

Why have you used a Coffer filter here? I think you can directly apply a small amount( as indicated in your illustration posted before) of thermal compound container/bottle to CPU and heat sink.?

Coffee filter does not leave any small particle of lint on the surface of the CPU or heat sink which can reduce the effectiveness of the thermal compound. You want the best heat transfer possible.