Must help!!! Please!

When i select vertices, faces or lines it selects them randomly even when i click exactly on the one i want. Its an error of some sort ive even tried to reinstall blender but it doesnt help… please i need help!

In your graphics card control panel try turning off anti-aliasing

Thank you you so much for the help i just put my graphics card on application controlled, again thankyou for ending my week of frustration i thought i would have to buy a new computer.