HP Engage Go 13.5 Maintenance and Service Guide - Page 87

Keyboard or System Unit Error, 90E-Power Supply Fan Not detected

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Table 7-1 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. 80 Chapter 7 POST error messages

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Table 7-1
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
module installed in the system that is not
supported and has been disabled.
Replace with a supported module.
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
malfunctioned.
1.
Reseat fan.
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.
80
Chapter 7
POST error messages