Aspire 4720, 4720Z User's Guide EN
Page 58
... • If you are provided for each one. Nothing appears on the power, but the computer does not start or boot up. If pressing a key does not turn the display back on the taskbar. See "Closed front view" In Windows, look at the volume control (speaker) icon on . Remove... or replace it is not lit, no power is heard from the computer. Press and release the power button to adjust the volume. Easy solutions are using...
... • If you are provided for each one. Nothing appears on the power, but the computer does not start or boot up. If pressing a key does not turn the display back on the taskbar. See "Closed front view" In Windows, look at the volume control (speaker) icon on . Remove... or replace it is not lit, no power is heard from the computer. Press and release the power button to adjust the volume. Easy solutions are using...
Aspire 4720, G, Z, 4320 Service Guide
Page 79
... In this situation BIOS will issue 4 short beeps then shut down system, no message will shut down system, not show . Replace and run Setup Replace RTC battery and Run BIOS Setup Utility to reconfigure system time, then reboot system. Keyboard locked - System timer error RTC battery Run... BIOS Setup Utility to reconfigure system time, then reboot system. Hard disk drive System board Stuck Key see "Keyboard or Auxiliary Input ...
... In this situation BIOS will issue 4 short beeps then shut down system, no message will shut down system, not show . Replace and run Setup Replace RTC battery and Run BIOS Setup Utility to reconfigure system time, then reboot system. Keyboard locked - System timer error RTC battery Run... BIOS Setup Utility to reconfigure system time, then reboot system. Hard disk drive System board Stuck Key see "Keyboard or Auxiliary Input ...