Why does my computer shut down automatically after being turned on for a while and then the monitor becomes unresponsive when I turn it on? I have to turn it on several times before I can use it. Sometimes the monitor still remains unresponsive.

1. Clean the dust in the case, open the case cover, and start the computer test;

2. Download the driver and test the hardware temperature. Whichever is the highest is its fault;

3. If it is a CPU, then the fan blades on the heat sink will do. If it is a memory, how many blades do you have? If there is one, replace it, if there are two, remove one. If it is a graphics card, just unplug it. Check the heat sink or cooling fan. Replace the fan blades if necessary, and add silicone grease if needed. Silicone grease,

The most important thing is to re-plug the memory and graphics card. Haha, I wish you good luck. I hope it is a component that is not dissipating heat. Go try it soon