Windows 8.1 Live Tiles not working. Please Help.!

[OmKaR Kadiyam]

Hi i'm working on DELL Inspiron 15R 5537,
The Problem is, When I click On any Windows Tile Ex : ( Mail, Weather, Calender, Store, etc.. ), they will open and in a 2 secs Gap it will Close. I can Find Running them in side bar, but again i click on them it will close in a 2 secs.
Pls Help to solve this.

 

[OmKaR Kadiyam]

Thank you for the reply Premkz, but the Problem is not about multitasking, The Problem is when i click on the app, it maximizes with a flip animation and Closes Immediately, and the Start menu Opens automatically, This is in 2 secs Span..! but still the apps which i opened running in background. Can i get perfect solution for this.??