One, why time will change automatically
Reason 1, because the computer motherboard battery has no electricity reason, causes the computer time to appear the error, also is returns to the factory setting stage, at this moment our solution is to replace the motherboard battery. But this is generally rare. As shown in the figure:
Reason 2, because of the virus or Trojan, virus in order to prevent the killing of anti-virus software, thereby changing the computer time, resulting in some anti-virus software failure, can not work properly.
Second, time virus solution
We can download some optimization software, such as the optimization master, 360 security guards and so on, there are time protection settings, we only need to make specific settings. Here are 360 security guards on the system Time Protection tool, we click "Install time to protect" can be. At this point, we can not change the time at will, if we need to change the time manually, then we need to click the following "Allow time to modify" can be.