Homemade cpu cooler for hot laptops

Hello everyone. I had my brother's Acer Aspire 5733 with 1st generation core i3 in it for a while. We all know how the 1st gen laptops overheat. My problem was that I use laptop for real portability and cannot carry a cooling pad all the time. and after an extended period of continuous usage, say 3 hours, the heat would accumulate near the processor and the laptop would run the fan at very high speeds. yet, the local temperatures would cause it to trip off. so toasted thighs and trip off made me frustrated for answers. I tried to search for a bios unlock tool to make the fan rotate at high speed all the time not allowing the heat to accumulate.With all my efforts in vain, I finally decided that it was time for a hardware hacking. Here is what I did.

1.First I opened the laptop.
To open the laptop, first remove the power cables and the battery. Then unscrew the bottom. after that, open the lid and remove the keyboard (it will be tricky. I suggest you look for a YouTube video on how to open a laptop). After the keyboard is out, remove all the connections that are accessible. Spare a minute or two to re-check whether all the connections are undone. Then you can pull out the touchpad area easily. Now you can see the motherboard. Depending on the model and make of the laptop, your processor could be facing the keyboard (most unlikely though) or downwards.

What I saw was something like this

2. Now i removed all the connections to free the motherboard from the laptop.

this is the other side of the motherboard.

As you can see, the copper pipe is the heat transfer medium. one end is connected to the fins near the fan and the other end attached is the heat transfer seat over the processor. the processor is below the seat. Please do not remove the screws anxious to see the processor because there is a thermal paste between them. if this thermal paste is erased, you have to wipe all the paste and reapply paste. It is not a tedious task but why waste the original paste.

3. I had an old pentium 1 pc lying nearby useless. so i went there and hijacked the heat sink and cooler fan on the processor. you can alternately look for a thin client heat sink or a desktop gpu heat sink. i have compressed it a bit to make it thin. i took a pair of pliers and compressed each fin manually.

BEFORE

 AFTER

 
3. It was still bulky to fit in the space between the base of my laptop and the processor. I did not want to tamper the original cooling system of my laptop. so, I cut it into small piece to fit in the recess of my cooling seat. I applied some thermal paste and sticked it in the recess. the good news was that the thermal paste formed a bonding layer between the seat and the heat sink due to the lack of air bubbles between them. the final product looked like this.

after this step, i fitted the laptop and started it to find that the heat sink was working so impeccably good that all the heat was directly coming through the heat sink. since the heat sink faced downwards, my thighs were being toasted and the laptop got from bad to worse. so i had to think of a way to blow the heat off the heat sink. I could simply use a cooling pad here but i really use laptop for portability and so cannot carry a cooling pad always with me. so i came up with a solution.

4. i had the fan of the old pentium which luckily was very thin to fit inside my laptop. so i cut it one end to blow air sidewards instead of the upward position and squeezed it in the free space. since it was only 0.12A, 5V dc fan with only two terminals, i had no trouble finding the power source. I used the USB port connections to the fan.

5.time to make extra air vents for fan. i used a soldering gun to melt the plastics and used a steel ruler as a guide. i longitudinally made some slots just like the original ones though the homemade ones looked ugly. some of them were below the fan for air inlet and the others were to the side of the laptop for outlet.

5. time to pack up everything in the reverse order of removal. Since i have opened the laptop, i also cleaned the fins of the original cooling system. additionally i used a tyre tube between the heat sink and base to isolate any heat from coming down.

Conclusion: Now, my laptop does not irritate me with frying my laps. it just blows hot air through the sides.