Windows 7 can not modify the system time and the solution

Win7 system time is not accurate, but when it is modified, it can not be modified. How can we solve this problem? Let Xiaobian help you analyze the reasons for this problem and how to solve it.

Analysis of the reasons why the system time cannot be modified:

First, the motherboard battery (cmos) is dead.

Second, there is no permission to modify the time

There is a virus in the computer (the purpose of such virus modification time is to make the anti-virus software useless, or cause some software to run abnormally, such as securities stock software)

Solution:

Determine whether the CMOS battery is dead. First, start the laptop and enter the bios interface. Then modify the time, save and exit, turn off the computer and restart, and then enter cmos to view. If the time is running according to the modification, it means the battery is no problem, otherwise it will be Need to replace the battery, if you still can't replace the good battery, it may be a problem with the motherboard.

2, to determine whether it is a virus, some computers can be modified in windows time, but after the modification, it quickly jumps to a wrong time, this situation is a virus, if the time can be modified, but re After the start time is not right, then you can start the computer after the time modification, enter the bios to see, if this time is wrong, it means that the motherboard battery is dead, if this time is right, the time is wrong after entering windows It is a virus.

3, check whether there is time to modify the permissions, first figure out the windows user name of their computer, if you do not know, press ctrl + alt + del three keys to view.

1) First click Start — Run, enter secpol.msc in the Run dialog box, then press Enter;

2) In the pop-up "Local Security Policy" In the window, expand to "“Local Policies--"User Rights Assignment" Items;

3) Then find and double-click "Change System Time" in the list on the right to pop up a window ( If the operation cannot be completed, it means that you do not have administrative rights, log in again with administrator. It lists the user list with permissions. If you find that there is no user name, you have no permission. If you already have your username, Explain that you have permission, but if the time still can't be modified, it means it is a virus.

4) If it is a situation without permission, increase the permission and then modify the time. If it is judged to be a virus and there is no effective anti-virus method at present, it is recommended to cancel the time modification permission of all users, and then follow the steps below!

Cancel permissions: Select a user from the list, click Delete, and then click OK.

Add permission: Click “Add user or group”, then click Advanced, select user from the list, confirm the selection, and then click OK to close.

This is the reason why the Win7 system time can not be modified and the solution, and users who have encountered this problem, come see it.