Uninstall Bluestacks

1. Open Run(WINDOWS KEY+R) and type appwiz.cpl and click OK.
2. find Bluestacks and uninstall it. then
3. Restart your machine
4. Open -> run -> type temp and click ok. 
5. select all files and folder and delete it and skip file which give delete error.
6. Open -> run -> type %temp% and click ok.
7. select all files and folder and delete it and skip file which give delete error.
8. Goto C:\Program Files or C:\Program Files(x86) and delete Bluestacks folder if present.
9. Delete Bluestacks and Bluestacks Setup Folder form following location.
1. In Windows 7/8/8.1 
1. C:\Program Data\
2. In Windows XP 
1. C:\Documents and Settings\All Users\Application Data\
10. (If you cant find above location then just copy the address and past on computer address bar)
11. You have successfully uninstall your bluestacks.