Have you ever had a problem with a program which requires you to reboot your computer/ laptop so it works correctly?
A common issue which i have frequently is windows live messenger not signing me in and asking me to 'retry' or reboot in order for it to work correctly.
To fix this simply press CTRL + ALT + DELETE and then go into task manager,
Then go onto the tab processes tab and find the program which you want closed down. E.g msn would be called "msnmsgr.exe" firefox would be "Firefox.exe" and so on.
Then simply click on the process which you want ended and then press end process on the bottom right hand corner. This will close down the program/ process. Then click on the program which you had a problem with and it should work correctly.
Most common issues which i encounter are:
MSN messenger failing to sign me in
Firefox not responding
This process which i have listed above fixes these