CPU, motherboard, graphics card, temperature normal, fan is also good. Just do not know the power supply is how much, how to view?
The power supply should be disassembled and the power indicated on the power supply shall be checked. General power supply is insufficient to restart or blue screen, will not automatically shut down oh. You can check the power of the computer with Master Lu and check the power of the computer hardware to see if it's enough.
First identify the hardware and software problems, and then find counterparts; software, reinstall the system can be; a plug and try on the hardware, try it
If you add new hardware over recent power supply may be, if not recently added hardware is also possible causes of the virus, a backup of important data, try to redo the system, re done if the problem persists, it is a hardware problem.
Look at the hardware master. Automatic shutdown and power failure are not necessarily related, remove the software failure may be poor contact, exclusion method. Advanced to safe mode to see, if not shut down is a hardware problem, the hardware need to disassemble, HP machine then took early to give up looking for the clerk.
Judging by your description, your home circuit there is no instability, whether there is the decoration of the neighbors, and recently used in air conditioning of many people, your home circuit residential buildings have replaced large power wire, if no problem, then you can change the power. If the above problems, there is no use of your computer how much effort, there is a solution that can buy an external UPS power supply, the circuit can ensure the stability of your good, because of electricity storage, so the instantaneous power will not cause harm to your computer, Santak, the United States uninterrupted power supply go to Taobao, old brand, or a Jingdong, directly solve your household electric peak problems