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Maintenance & Service Guide
Presario 3500 Series Personal Computers

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Power-On Self Test (POST)

POST is a series of diagnostic tests that run automatically when the system is turned on. After the computer is turned on, POST checks the following assemblies to ensure that the computer system is functioning properly:

POST also detects the type of mass storage devices installed in the computer.

If POST finds an error in the system, an error condition is indicated by an audible or visual message.

 

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Revised: 19 Nov. 1999