You have encounter high temperatures especially during gaming.
You contacted the Repair Centre.
They told you to update the BIOS (usually the fix include making the fan spin more often).
You have sent the laptop back and forth until you have given up.
Finally the warranty run out and you can only depend on yourself.
Below are the following mods you can do.
Note: Most steps require dismantling of the system it will help with expert supervision and googling and down loading of service manual to dismantle it.
- Throw away the thermal pad on the GPU and use Arctic Silver 5 instead
- Remove the original CPU thermal paste and use Arctic Silver 5 instead.
- Remove and throw away the "air filter" below the Laptop bottom cover to allow better air flow (I decided to do this after realizing this is the only part you can feel that air actually goes into the laptop, hence obstructing it restricts air flow hence remove it)
- Sand the surface of heatsink which comes into contact with the GPU or CPU chip, using FINE SILICON CARBIDE PAPER
- Sharpen the edges of the air vent casing (I got this inspiration by observing other Acer Aspire Laptop (Aspire 4935G) models, I noticed their vent size is gigantic compared to the vent size of this particular model hence it could be one of the gaming overheating factors. The new Acer Aspire 4736ZG Series Air Vents actually have even bigger holes than 4935G!)
Originally it has 16 dividers I cut out 8 of them so it looks like this.




















