Compaq Presario 1800 Presario Selct 1800 Series Maintenance and Service Guide - Page 20

Maintenance & Service Guide Presario 1800 Series Models: 1805 and 1810 | Home Page | Notice | Preface | Product Description | Troubleshooting Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications Pin Assignments | Battery Pack Operations 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. If the system is not functioning well enough to run POST, or if the display is not functioning NOTE: well enough to show POST error messages, refer to the Troubleshooting tables. Probable Cause DMA, timers, etc. Probable Cause Configuration incorrect CMOS reflects that an invalid configuration has been set. 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. Memory test data error 2. Replace the system board. 1. Replace the memory modules. XX000YZZ RAM failure 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.