HP Engage Flex Pro-C G2 Maintenance and Service Guide - Page 79
Keyboard or System Unit Error, 90E-Power Supply Fan Not detected
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Table 6-1 POST numeric codes and text messages (continued) Control panel message Description Recommended action 500-BIOS Recovery A system BIOS recovery has occurred. Not applicable. 70x-Wireless Mode Not Supported The system has detected a wireless Replace with a supported module. module installed in the system that is not supported and has been disabled. 800-Keyboard Error Keyboard failure. 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins. 3. Be sure that none of the keys are pressed. 4. Replace keyboard. 801-Keyboard or System Unit Error Keyboard failure. 1. Reconnect the keyboard with computer turned off. 2. Be sure that none of the keys are pressed. 3. Replace the keyboard. 4. Replace the system board. 900-CPU Fan Not Detected CPU fan is not connected or might have 1. Reseat fan. malfunctioned. 2. Reseat fan cable. 3. Replace fan. 901-Chassis, Rear Chassis, Front Chassis, or PCIe blower Fan not Detected Fan is not connected or might have malfunctioned. 1. Reseat fan. 2. Reseat fan cable. 3. Replace fan. 904-SATA Cabling Error One or more SATA devices are improperly attached. For optimal performance, the SATA0, SATA1, and SATA2 ports should be used for hard drives before other ports. Be sure that SATA connectors are used in ascending order. For one device, use SATA0. For two devices, use SATA0 and SATA1. For three devices, use SATA0, SATA1, and SATA2. 90B-Fan Failure The system has detected that a cooling fan is not operating correctly. 1. Reseat fan. 2. Reseat fan cable. 3. Replace fan. 90D-System Temperature Thermal shutdown occurred. The system BIOS has detected that your machine was previously shut down to avoid overheating. Overheating might occur if the cooling vents are blocked or the operating temperature exceeds the system specifications. The machine should return to normal operation once the situation is resolved. Be sure system has proper airflow. 90E-Power Supply Fan Not detected Power supply fan is not connected or might have malfunctioned. 1. Reseat power supply fan. 2. Reseat fan cable. 3. Replace power supply fan. POST numeric codes and text messages 73