Acer Predator G3620 - Manual (Page 41)

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English No sound comes out from the computer.
Check the following:
• The volume may be muted. Look for the Volume icon on the taskbar. If it is
crossed-out, click on the icon and deselect the Mute option. You can also
press the volume control/mute knob on your USB keyboard to toggle from
mute to sound on.
• If headphones, earphones or external speakers are connected to the line-out
jack of your computer, the internal or built-in speakers are automatically turned
off.
System cannot read hard disk or optical disc drive information.
Check the following:
• Make sure you are using the correct type of disk.
• Make sure the disc is inserted into the drive correctly.
• Check if the disc is clean and unscratched.
• Check your drive by using a good (undamaged) disc. If your drive can not read
the information on the good disc there may be a problem with the drive.
Contact your dealer or technical support center for assistance.
System cannot write data on the hard disk or disc.
Check the following:
• Make sure the disk is not write-protected.
• Make sure you are using the correct type of disc.