HP EliteDesk 800 Maintenance and Service Guide - HP EliteDesk 800 G1 Tower, HP - Page 252
POST error messages, Control panel message, Description, Recommended action
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Control panel message 301-Keyboard Error Description Keyboard failure. 303-Keyboard Controller Error I/O board keyboard controller. 304-Keyboard or System Unit Error Keyboard failure. 501-Display Adapter Failure Graphics display controller. 510-Flash Screen Image Corrupted Flash Screen image has errors. 511-CPU, CPUA, or CPUB Fan not Detected CPU fan is not connected or may have malfunctioned. 512-Chassis, Rear Chassis, or Front Chassis Chassis, rear chassis, or front chassis fan is Fan not Detected not connected or may have malfunctioned. 513-Front Chassis fan not detected Front chassis fan is not connected or may have malfunctioned. Recommended action 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins. 3. Ensure that none of the keys are depressed. 4. Replace keyboard. 1. Reconnect keyboard with computer turned off. 2. Replace the system board. 1. Reconnect the keyboard with computer turned off. 2. Ensure that none of the keys are depressed. 3. Replace the keyboard. 4. Replace the system board. 1. Reseat the graphics card (if applicable). 2. Clear CMOS. (See Appendix B, Password security and resetting CMOS on page 250.) 3. Verify monitor is attached and turned on. 4. Replace the graphics card (if possible). Reflash the system ROM with the latest BIOS image. 1. Reseat CPU fan. 2. Reseat fan cable. 3. Replace CPU fan. 1. Reseat chassis, rear chassis, or front chassis fan. 2. Reseat fan cable. 3. Replace chassis, rear chassis, or front chassis fan. 1. Reseat front chassis fan. 2. Reseat fan cable. 3. Replace front chassis fan. 240 Chapter 10 POST error messages