If you been using someones Pc in guest account and want to have Admin privilage then don't worry,here is a trick for you to Gain Admin Privilage .lets get started with it.
Method 1.
1) Go to C:/windows/system32.
2) Copy cmd.exe and paste it on desktop.
3) Rename cmd.exe to sethc.exe.
4) Copy the new sethc.exe to system 32,when windows asks for overwriting the file,then click yes.
5) Now Log out from your guest account and at the user select...
