What should I do if the win7 system computer time cannot be adjusted?

The following Xiaobian share the reason and solution for the win7 system can not adjust the computer time.

First, the cause of the failure:

1, the motherboard battery (cmos) no electricity.

2, the computer has a virus, and the purpose of such virus modification time is to make the anti-virus software use, or cause some software to run abnormally.

3, no permission to modify the time.

Second, the solution:

1, to determine whether the motherboard battery cmos no power: start the laptop into the bios interface, then modify the time, save and exit, turn off the computer to restart, and then Enter cmos to view, if the time is run according to the modification, it means that the battery is no problem, otherwise the battery is dead and needs to be replaced. If it is still not possible after replacing the battery, it may be a problem with the motherboard.

2, to determine whether there is a virus: the computer can be modified in windows time, but after the modification, it quickly jumps to a wrong time, if the time can be modified, but the time is not correct after the restart, then please Modify the time, then start the computer, enter the bios to see, if this time is wrong, it means that the motherboard battery is dead, if the time is right, the time is wrong after entering Windows, it is the cause of the virus .

3, check whether there is a way to modify the permissions, first figure out the windows user name of their computer, if you do not know the user, you can press ctrl + alt + del key combination to view, if there is no modified permissions Please follow the steps below

4. Click “Start —Run”, enter secpol.msc command and press Enter;

5, pop up to “Local Security Policy In the window, expand to "“local policy——user rights assignments" items;

6. Find and double-click "Change system time" in the list on the right, a window pops up (If the operation can not be completed, you need to use the administrator to log in again), which lists the list of users with permissions. If you do not have your username, you have no permission. If you already have your username, you are Have permission, but if the time can not be modified, it is a virus problem.

7. If it is a problem with no permission, please add the permission and then modify the time. If it is a virus problem, and there is no effective anti-virus method at present, it is recommended to cancel the time modification permission of all users, and cancel the permission method: select the user from the list, click delete, and then click OK.