"Tip: If you are asking for help to troubleshoot a computer-related problem, please be sure to include all the necessary information (ie: operating system, model number, hardware, software, etc) that will help others identify your problem for a speedy resolution."

Keep in mind you supplied so little information that responses may be less than helpful. Some operating systems such as Windows 98, ME and XP have some go back features in which you can go back a few days to when it worked proper. But the OS wasn't noted or if the system ever worked proper.

Bob