Acer 420 series User Manual page 56

48
Image is not full-screen.
The computer display has a native resolution of 1024 x 768 (XGA) for
the 14.1"/15.0" or 1400 x 1050 (SXGA+) for the 15.0"(selected models
only). If you set the resolution lower than this, the screen expands to
fill the computer display.
Right-click on your Windows desktop and select Properties to bring up
the Display Properties dialog box. Then click on the Settings tab to
make sure that the resolution is set to the appropriate resolution.
Resolutions lower than the specified resolution may not be full-screen
on the computer or on an external monitor.
No audio is heard from the computer.
Check the following:
•
The volume may be muted. In Windows, look at the volume
control (speaker) icon on the taskbar. If it is crossed-out, click on
the icon and deselect the Mute option.
•
The speakers may be turned off. Press Fn-F8 to turn the speakers
on (this hot key also turns the speakers off).
•
The volume level may be too low. In Windows, look at the volume
control icon on the taskbar. See "Hot keys" on page 15 for more
detail.
•
If headphones, earphones or external speakers are connected to
the line-out port on the computer's right panel, the internal
speakers automatically turn off.
3 Troubleshooting my computer