Acer Network Device Altos R520 - Manual (Page 144)

5 Troubleshooting 134
ODD tray cannot be ejected.
• Insert the tip of a paperclip into the small hole on the ODD drive.
Slowly pull the tray out from the drive until the tray is fully
extended then remove the disc.
ODD 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 ODD and plastic guide are properly connected.
Hard drives are not recognized.
Do the following:
• Make sure the disk controller is not disabled in the BIOS setup.
• Make sure the drive is compatible.
Bootable CD drive is not detected.
Make sure the Boot Options setting in the BIOS setup utility is
configured to allow the CD drive to be the first bootable device.
New memory modules installed are not detected.
Do the following:
• Make sure the memory modules are properly seated on the DIMM
slots.
• Make sure the memory modules comply with the system
requirements.