i can not get close and minimizes botten on the uper top corner of the srcreen the what i do for that please give me solutions regarding it

Hello,

Please make sure you've installed KB2919355 (Windows 8.1 Update).

Regards.

Hello bharat,

First of all, you can press the hotkey Alt+Space.

For the issue, do you remember when did this issue firstly occurred, after installing some driver or any updates?

Some troubleshooting steps for your reference:

1. Have you check the monitor settings to adjust the horizontal and vertical positions?

2. Update the display driver.

3. Check whether this issue occurs in Safe Mode.

Thanks,