HP Dx5150 HP Business Desktop dx5150 Series Service Reference Guide, 1st Editi - Page 145
Power LED will
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POST Error Messages Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes nine times, once every second, followed by a two-second pause, and the computer beeps nine times. Beeps stop after five times but the Power LED will continue flashing until the problem is resolved. 9 or None, depending on the issue System powers on but is unable to boot. 1. Check that the voltage selector, located on the rear of the power 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, and the computer beeps ten times. Beeps stop after five times but the Power LED will continue flashing until the problem is resolved. 10 Bad option card. 1. Check each graphics card 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. Service Reference Guide, dx5150 361685-001 C-7