During operation, any laptop requires user intervention for preventive maintenance and cleaning of the cooling system.
If a laptop with enviable regularity began to reboot itself during operation, then there is a possibility of overheating. Periodic freezes during games or slowdowns in multitasking mode, when several resource-intensive programs are running at the same time, as well as strong heating of the top panel - all this directly or indirectly indicates the need for cleaning.
There is no time frame to indicate the need for service. You need to focus only on the signs of overheating and the temperature of the processor, which directly depends on the state of the internal grille. If the dusty plugs on the vents interfere with normal air circulation, the possibility of overheating increases dramatically.
Normal temperature values under load range from 60-80 degrees. After exceeding the permissible values, the internal protection system of the laptop is triggered and it goes into reboot in order to avoid damage to the components. To independently diagnose the presence of overheating and the need for cleaning, there are several free utilities. As an example of such a program, it can be. Of the paid analogs, a program of 30 days of a trial period can be distinguished, which will be quite enough for monitoring temperature sensors.