Win7 system desktop right down time after the invalid how to do

The time displayed on the computer requires us to set up in the lower right corner. Sometimes we find that we want to change the time, but we can't change it. In the ghost Win7 system, if you want to modify the desktop in the lower right corner of the time, a very long way is to directly click on the modification, but if you find that the click did not respond to change, this so how to do? Here are a few ways to do this.

1, modified after a period of time is automatically restored, such problems are generally due to the motherboard battery is not electricity caused by the need to replace the battery, and then modify the time;

2, if the Win7 pure version of the system can not be modified, then try to boot when the Click del key into the BIOS settings, and then the time to modify and save;

3, the system can not be modified, it is possible that the account permissions are not enough, you need to first see if you are logged in with an administrator account, you can also try to add user rights and modify the time, the specific operations are as follows:

(1) Click "Start", "Run" and enter "Gpedit.msc";

(2) Open Group Policy, click to open "Computer Configuration" → "Windows Settings" → "Security Settings" → "Local Policy" → "user rights to assign options;"

(3) Find "Change system time" inside the right window;

(4) Directly Double-click "Change System Time", add the Username, "click OK;"

(5) Reboot of the computer is OK.