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Maintenance & Service Guide
Presario 2250 Series
2510, 2410 ES & 4240 ES Personal Computers

Home  |   Preface    |   Product Description   |   Troubleshooting   |   Illustrated Parts   |    Removal & Replacement
Jumpers & Switches   |   Specifications   |   Connector Pins    |   Power Cord Requirements


Power-On Self Test (POST)

POST is a series of diagnostic tests that run automatically when the system is turned on. If POST finds an error in the system, an error condition is indicated by an audible and/or visual message.

Click here for a listing of possible error messages and solutions.

NOTE:

An external speaker must be installed into the speaker output connector in order to hear beeps during POST.

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.

 

 
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