Why the computer will lose power to restart during the use

Q: My computer is always in the process of being used, but the monitor power LED is still lit. Power on again, sometimes no response, sometimes the operating system can normally start, but not long, the power is automatically closed. Sometimes the operating system restarts automatically every two minutes, but immediately loses power. Sometimes the boot one hours does not appear this situation. In addition, the power to the other machine to try and no problem, what should I do?

A: The phenomenon can be considered in the following aspects:

First of all, you have to make sure that the computer is infected with the virus, you can use the latest anti-virus software to disinfect it, so as to eliminate the cause of the virus. Secondly, to check whether the AC mains is 220V, the general power supply can only work in the 220v±10% environment, when exceeding this rated range, the power supply overcurrent protection and overvoltage protection circuit work, will automatically turn off the power. Second, to change a power supply, if the fault disappears, then, the problem should be due to power supply, the proposed replacement power. If you confirm that the power supply is not a problem, then the problem may be due to computer accessories fault, for example, a part of the local leakage or short-circuit, resulting in the power output current is too large, the power supply overcurrent protection will work, so that the power supply without output. This situation needs to be replaced by the "replacement method", if the luck is good, reinstall the motherboard problem can be solved.