After making sure all monitor & screen setting have been checked, the problem still persists you need to go to device manager.
Below I have placed a link that will explain the procedures for you.Please come back to us with any queries
Identifying problems in Windows Device Manager.
Uninstall Device and Device Driver
Device Manager - Install Driver
We will require a few more details of your computer, please see attached:-
￼Give Us Your Specs…….￼
￼ What is the Make & Model Number of Your Computer?
E.g. Dell 1545 Laptop,……… HP SR5019UK PC……………
￼Which Vista Operating System do you have?
E.g. Basic, Premium, 32bit or 64bit?
￼ How much Ram/Memory do you have? 2Gb, 3Gb…………..
￼Which Browser do you have?
￼Which Computer Security/Software do you have?
If you are unsure or don’t know, click on the link below, if you are able.
Download speccy then post your result. ￼
FileHippo.com - Download Free Software