Acer Aspire 3935 Acer Aspire 3965 Series Service Guide - Page 73

Performing a BIOS Recovery 1. Shut down the BIOS failed-computer. 2. Connect the USB storage device containing the BIOS recovery crisis disk files to the failed computer. 3. Press and hold + keys (this is the BIOS recovery hotkey), then press the power button. The system will now execute the BIOS recovery process. When the process is complete the computer will automatically reboot. 4. Disconnect the USB storage device from the computer. 5. Perform a BIOS flash procedure to update the BIOS firmware. POST Error Indicators When a system error is detected during POST (Power On Self Text), the Setup Utility will switch to diagnostic mode and will either: • Displays a POST error message, or • Emits a series of beep codes POST Error Messages POST error messages tell users what failure the system has detected. Some error messages could be related to a hardware device. Others may indicate a problem with a device configuration. In some cases an error message may include recommendations for troubleshooting or require that you press the Enter key to display recommendations. Follow the instructions on the screen. It is recommended that you correct the error before proceeding, even if the computer appears to boot successfully. The table below lists the messages that the BIOS has defined and can display. If your system displays one of the messages marked below with an asterisk (*), write down the code and message and contact your Acer service provider. IMPORTANT: If your system fails after you make changes in the Setup menus, reboot the computer, enter Setup again and load Setup defaults to correct the error. Error Messages Stuck Key System CMOS checksum bad - Default configuration used Real time clock error Previous boot incomplete - Default configuration used Invalid System Configuration Data Check or do the following in sequence: See "Keyboard or Auxiliary Input Device Check" section on page 71.  RTC battery  Run the BIOS Setup Utility to reconfigure the system time, then reboot system.  RTC battery  Run the BIOS Setup Utility to reconfigure system time, then reboot system.  Mainboard  Select "Load Setup Defaults" in the BIOS Setup Utility's Exit menu.  RTC battery  Mainboard  Select "Load Setup Defaults" in the BIOS Setup Utility's Exit menu.  Mainboard Acer Aspire 3935 Service Guide 65