HP dc72 - Blade Workstation Client Getting Started Manual page 20

Table 2 Solving Hardware Installation Problems (continued)
A new device is not recognized as part of the system.
Cause
USB ports on the computer are disabled in Computer Setup.
Computer will not start.
Cause
Wrong memory modules were used in the upgrade or memory
modules were installed in the wrong location.
Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five
times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Memory is installed incorrectly or is bad.
12 Quick Setup & Getting Started
Solution
Setup to reconfigure or disable devices to resolve the resource
conflict.
Enter Computer Setup (F10) and enable the USB ports.
Solution
1. Review the documentation that came with the system to
determine if you are using the correct memory modules
and to verify the proper installation.
NOTE: DIMM 1 must always be installed.
2. Observe the beeps and LED lights on the front of the
computer. Beeps and flashing LEDs are codes for
specific problems.
3. If you still cannot resolve the issue, contact Customer
Support.
Solution
CAUTION: To avoid damage to the DIMMs or the
system board, you must unplug the computer power
cord before attempting to reseat, install, or remove a
DIMM module.
1. Reseat DIMMs. Power on the system.
2. Replace DIMMs one at a time to isolate the faulty module.
NOTE: DIMM 1 must always be installed.
3. Replace third-party memory with HP memory.
4. Replace the system board.
ENWW