• Code: 853
• Description: Wireless LAN card not detected
• Causes: • Loose connection

• Code: 854
• Description: Wireless LAN card not detected
• Causes: • Loose connection

• Code: 855
• Description: Wireless LAN card error
• Causes: • Loose connection • Defective wireless LAN card

• Code: 856
• Description: Wireless LAN card error
• Causes: • Defective wireless LAN board • Loose connection

• Code: 857
• Description: USB interface error
• Causes: Defective USB driver • Loose connection

• Code: 860
• Description: HDD: Initialization error
• Causes: • HDD not initialized • Defective HDD

• Code: 861
• Description: HDD: Reboot error
• Causes: • Loose connection • Defective cables • Defective HDD • Defective controller

• Code: 862
• Description: Defective sector error
• Causes: • Defective HDD • Defective controller