I'm using `MS Excel 2013` on Windows 7. Vertical and horizontal scroll bars have disappeared and I can't find why or how ?

I checked for resolution in the [Documentation](https://support.office.com/en-us/article/Hide-or-display-scroll-bars-in-a-workbook-2101e630-fa9b-4d22-90e0-b110278bafa7) on Microsoft Support that says this.

[![enter image description here](https://i.stack.imgur.com/5e1Jf.png)](https://i.stack.imgur.com/5e1Jf.png)

But `the options are already checked`. Can anyone figure out What's the problem ?

Here is the screenshot. Whether it's full screen mode or not, it's the same.
[![enter image description here](https://i.stack.imgur.com/DS20P.png)](https://i.stack.imgur.com/DS20P.png)