HP AM872A#ABA Presario Select 1200 Series Maintenance and Service Guide - Page 15

Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Power-On Self Test (POST) Running POST To run POST, complete the following steps: Turn off the computer, then turn on the computer. If POST does not detect any errors, the computer will not beep. This indicates successful completion of POST test. POST has run successfully and boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive). If POST detects errors, the errors are indicated by screen and/or audible messages. Refer to "Power-On Self-Test (POST) Codes" in the tables for a list of POST codes and their relevant descriptions. NOTE: If the system is not functioning well enough to run POST, or if the display is not well enough to show POST error messages, refer to the Troubleshooting tables. functioning Probable Cause DMA, timers, etc. Probable Cause Configuration incorrect CMOS reflects that an invalid configuration has been set. RAM failure Memory test data error XX000YZZ RAM failure Power-On Self-Test Messages 102-System Board Failure Recommended Action Replace the system board. 162-System Options Not Set Recommended Action Run Computer Setup. Run Computer Setup. 1. Replace the memory modules. 2. Replace the system board. 1. Replace the memory modules. 2. Replace the system board. Replace the system board. Probable Cause Probable Cause Keyboard failure XX000YZZ 201-Memory Error Recommended Action 301-Keyboard Error Recommended Action 1. Ensure the keys are not depressed during POST. 2. Reconnect the keyboard with the computer off. 3. Replace the keyboard. 304-Keyboard or System Unit Error Probable Cause Recommended Action Keyboard or system board error 1. Replace the keyboard. 2. Replace the TouchPad or mouse. 3. Replace the system board. 601-Diskette Controller Error Probable Cause Recommended Action Mismatch in drive type or failure in the diskette controller 1. Run Computer Checkup (TEST). 2. Check and/or replace cables. Probable Cause Mismatch in drive type Probable Cause Disk 0 failed to respond 3. Replace the system board. 605-Diskette Drive Error Recommended Action Run Computer Setup. 1780-Primary Hard Drive 0 Failure Recommended Action 1. Run Computer Checkup (TEST). Hard drive format error 2. Replace the hard drive. 1. Run Computer Checkup (TEST). Probable Cause Hard drive controller failure 2. Replace the hard drive. 1782-Hard Drive Controller Recommended Action 1. Run Computer Setup. 2. Replace the hard drive.