NEC Express5800 User Manual page 228

8-10 Troubleshooting
POST fails to complete:
Is the DIMM board installed?
→ Check the installation location of DIMMs (see Chapter 9).
Is the memory size large?
→ The memory check may take a few seconds if the memory size is large. Wait for a
while.
Did you perform any keyboard or mouse operation immediately after you started the
server?
→ If you perform any keyboard or mouse operation immediately after start-up, POST
may accidentally detect a keyboard controller error and stops proceeding. In such
a case, restart the server once again. Do not perform any keyboard or mouse
operation until the BIOS start-up message appears when you restart the server.
Does the server have contains appropriate memory boards or PCI devices?
→ Operation of the server with unauthorized devices is not guaranteed.
Fail to access to internal or external devices (or such devices fail to operate):
Are cables properly connected?
→ Make sure that the interface cables and power cord are properly connected. Also
make sure that the cables are connected in the correct order.
Is the power-on order correct?
→ When the server has any external devices connected, power on the external
devices first, then the server.
Did you install drivers for connected optional devices?
→ Some optional devices require specific device drivers. Refer to the manual that
comes with the device to install its driver.
Is BIOS configuration correct?
→ Some devices connected to the serial or parallel port may require I/O port address
or operation mode settings. Refer to the manual that comes with the board for
details to make correct settings.