Most of the computers are available with optional startup modes which can be used when the computer has any problem. Administrators or professionals usually use debugging mode for an advanced troubleshooting to diagnose the problems.

1. Each version of windows operating system is available with different modes for startup of a computer. One of such mode is the debugging mode which is considered as is an advanced startup option.

2. There are other startup options for advanced users and administrators as the normal user will not understand the steps involved. The IT administrator will connect the faulty computer through a serial cable which will starts the faulty computer in a debugging mode.

3. Debugging a computer with an assembly mode will allows to review the machine code which is used by the computer to communicate internally with various parts. When the administrator is looking the contents of memory locations, the assembly debugger will automatically display this information.

4. Computer programmers will try to use source mode debugging is they are looking for the problem using the application’s code. Debugging in the source mode needs lot of experience and computer programming knowledge.

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