when any Screen maximized i cannot seen bottom of the window

I cannot seen the bottom of the screen or window(full window or bottom tab) when it is maximized. I am facing this problem since two days,earlier it ok( i use to see full window when it is maximized).
can some one solve this problem.

Hellow and welcome to the forum.
Is this only a browser window we are talking about here or does it involve all applications?
If you open up notepad or word do you experience the same issue?
Is it unique to a single browser? Looks like you are using Chrome. Does the same thing happen when you use Internet Explorer?
Regards
Randy

It happening with all application(word,pdf...everything in my system)

Can you adjust the windows then close and reopen to get it to fit?

What happens if you position your mouse to get a double arrow at the top or bottom and double click?

I cannot seen the bottom of window when it is maximized.When i click on the top or bottom it maximizes or minimize the window

IF this only happened a couple days ago, have you thought about perhaps doing a system restore to a restore point prior to that event?