Does your Sony Vaio PCG-GRZ630 laptop run hot and shut off on its own? Most likely it happens because the heatsink got clogged with dust and because of that the laptop overheats and shuts off to prevent the CPU damage. This tutorial explains why it happens and how you can fix the problem.

Few Models of the Sony VAIO laptops are Notorious to get hot very fast. Many users of the VAIO GRZ-630 report that after few months of use the computer might shut itself down with in the first 30 minutes of usage.
In most cases this phenomenon occurs due to accumulation of dirt in the computer’s CPU cooling system.

Is it possible to fix this problem without taking your laptop to a repair shop? Sure it is, but you’ll have to take it apart and clean the cooling system. Even though it’s sounds complicated, it’s not. All you have to do is remove the keyboard and clean the cooling module witch includes heat sink and fan with compressed air. Follow steps in the tutorial and you’ll be done in a few minutes.

By the way, these instructions should work for some other Sony Vaio laptops. If your Sony laptop is different and you don’t know how to take it apart, you can search for the service manual.