HP Dc7100 HP Compaq Business Desktop dc7100 Series Service Reference Guide, 3r - Page 274

Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes seven times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is resolved. 7 System board failure (ROM detected failure prior to video). Replace the system board. Red Power LED flashes eight times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is resolved. 8 Invalid ROM based on bad checksum. 1. Reflash the ROM using a ROMPaq diskette. See the "ROM Flash" section of the Desktop Management Guide on the Documentation CD. 2. Replace the system board. Red Power LED flashes nine times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is resolved. 9 System powers on 1. Check that the voltage selector, but is unable to located on the rear of the power boot. supply (some models), is set to the appropriate voltage. Proper voltage setting depends on your region. 2. Replace the system board. 3. Replace the processor. Red Power LED flashes ten times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is resolved. 10 Bad option card. 1. Check each option card (PCI or PCI Express) by removing the card (one at a time if multiple cards), then power on the system to see if fault goes away. 2. Once a bad card is identified, remove and replace the bad option card. 3. Replace the system board. D-32 361288-003 Service Reference Guide, dc7100