Win7 system desktop right lower time modified after invalid how to do

            The time displayed on the computer needs to be set in the lower right corner. Sometimes we find that we want to change the time, but we can't change it. What is going on? In the ghost win7 system, if you want to modify the time in the lower right corner of the desktop, the long way is to click the modification directly, but if you find that the click is not The response can't be modified, so what should I do? Here are a few ways to do it.
1, after a period of time, but automatically restored, such problems are generally caused by the lack of power on the motherboard battery, you need to replace the battery, and then modify the time;
2, if the win7 pure version of the system is modified No, then you can try to boot when you click the DEL button to enter the BIOS settings, and then modify and save the time;
3, the system can not be modified, there may be insufficient account permissions, you need to first check whether it is managed To log in as a member account, you can also try to add user rights and modify the time as follows:
(1) Click “Start”,“Run”, then enter “gpedit.msc”;
(2) Open the group policy, and then click to open “computer configuration”→“windows settings”→“security settings”→“local strategy”→“user rights assignment options;
(3) In the window on the right, find "Change system time";;
(4) Double-click "<Change system time" to insert the user name. Go, & ldquo; then click OK;
(5) to restart the computer on it.