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Device Drivers
Programs that use specialized subroutines called device drivers can also cause problems with your computer. For example, a variation in the way the data is sent to the monitor may require a special screen driver program that expects a certain kind of video mode or monitor. In such cases, you may have to develop an alternative method of running that particular program— the creation of a boot file made especially for that program, for example. Call the support service for the software you are using to help you with this problem.
Memory-Resident Programs
Many utilities and supplementary programs load either when the computer boots or from an operating system prompt. These programs are designed to stay resident in system memory and thus always be available for use.
Because they remain in the computer's memory, memory conflicts and errors can result when other programs require use of all or part of the memory already occupied by these TSR programs.
Typically, your operating system's startup files or folder contain commands to start TSR programs when you turn on your computer. If you suspect that one of these TSR programs is causing a memory conflict, remove the commands that start them from the
Program Conflicts
Some programs may leave portions of their setup information behind, even though you have exited from them. As a result, other programs cannot run. Rebooting your computer can confirm whether these programs are causing the problem.