Acer AT150 F1 Series User Manual page 122

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Bootable DVD drive is not detected.
Make sure the Boot option setting in the BIOS setup utility is
configured to allow the DVD drive to be the first bootable device.
Newly installed memory modules are not detected.
Do the following:
• Make sure the memory modules specifications comply with the
system requirements.
• Make sure the memory modules have been populated according
to the system guidelines.
• Make sure the memory modules are properly installed on their
mainboard slots.
Network status indicator does not light.
Do the following:
• Check the cabling and network equipment to make sure that
they are in proper condition.
• Reinstall the network drivers.
• Try another port or hub on the switch.
Network activity indicator does not light.
Do the following:
• Make sure the correct network drivers are loaded on the system.
• Network might be idle.
Peripheral device connected to a USB connector does not work.
Do the following:
• Reduce the number of external devices connected to a USB hub.
• Refer to the documentation that came with the device.
5 System troubleshooting