Acer Altos BrainSphere P130 F7, User Manual

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Optical drive tray cannot be ejected
Insert the tip of a paperclip into the small hole on the optical drive. Slowly pull the tray out
from the drive until the tray is fully extended.
Optical drive cannot read a disc
Do the following:

Make sure you are using the correct type of disc.

Make sure the disc is properly seated in the drive.

Make sure the disc is unscratched.
 Make sure the drive’s cables are properly connected.
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 activity indicators do 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 port 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
There is problem with the software program.
Do the following: