- Check and make sure your cables are not loose.
- Next thing is to make sure your computer is free from virus.
- Also make sure the power outlet which is used for connecting the computer is not used to connect any heavy equipment which uses high voltage.
- If all of the above things are OK then may be the CPU fan is not working properly.
When your CPU fan doesn’t work properly then the Processor heats up quickly due to which the computer restarts itself.
So, what can you do about this. If you are able to change the CPU fan itself then you do it otherwise you can take the help of someone experienced.