HP dc5700 - Microtower PC User Manual

System does not power on and the LEDs on the front of the computer are not flashing.
Cause
Solution
System unable to power on. Press and hold the power button for less than 4 seconds. If the
hard drive LED turns green, then:
1. Check that the voltage selector, located on the rear of the
power supply on some models, is set to the appropriate
voltage. Proper voltage setting depends on your region.
2. Remove the expansion cards one at a time until the
5V_aux light on the system board turns on.
3. Replace the system board.
OR
Press and hold the power button for less than 4 seconds. If the
hard drive LED does not turn on green then:
1. Check that the unit is plugged into a working AC outlet.
2. Open hood and check that the power button harness is
properly connected to the system board.
3. Check that both power supply cables are properly
connected to the system board.
4. Check to see if the 5V_aux light on the system board is
turned on. If it is turned on, then replace the power button
harness.
5. If the 5V_aux light on the system board is off, then replace
the power supply.
6. Replace the system board.
Table 2-1 Solving General Problems (continued)
ENWW Solving General Problems 13

HP dc5700 - Microtower PC Specifications

General

Chipset	Intel Q965 Express
Optical Drive	DVD-ROM, DVD+/-RW
Form Factor	Microtower
Processor	Intel Core 2 Duo, Pentium D
Memory	Up to 4 GB DDR2
Storage	Up to 250 GB HDD
Graphics	Intel Graphics Media Accelerator 3000
Audio	Integrated
Network	Integrated 10/100/1000 Ethernet
Expansion Slots	1 PCI Express x16, 1 PCI Express x1
Ports	USB 2.0, VGA, serial, parallel, audio
Operating System	Windows XP, Windows Vista