Maintenance & Service Guide
Presario 5600 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:
- Keyboard
- System board
- Memory modules
- Video memory
- Diskette drive
- Hard drive
- CD (or DVD) drive
- Power supply
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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