Acer R720 User Manual download pdf (Page 148)

5 Troubleshooting

138

Confirming loading of the OS

Once the system boots up, the operating system prompt appears on

the screen. The prompt varies according to the operating system. If the

operating system prompt does not appear, see "No Characters Appear

on Screen" on page 143.

Specific problems and corrective actions

The following contains specific problems that may arise during the use

of your server. Possible solutions are listed for each problem.

Power indicator does not light.

Do the following:

• Make sure the power button on the control panel is turned on.

• Make sure the power cord is connected correctly.

• Make sure that the wall outlet has power. Test it by plugging

another device.

• Remove all expansion cards and see if the system boots. If

successful, add the cards back in one at a time with a reboot

between each addition.

• Make sure the memory modules comply with the system

requirements.

• Make sure the memory modules have been populated according

to the system requirements.

• Remove and reseat the memory modules.

• Make sure the CPU comply with the system requirements.

• Make sure the CPU is populated according to the system

requirements.

• Remove and reseat the CPU.

• Make sure the chassis standoffs are installed only below mounting

holes. Misplaced standoffs may have contact to the pins on the

bottom of the mainboard and cause a short.

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Acer R720 User Manual Page 148