Prompt to press F1/F2 each time computer boots
If you are prompted to press a function key each time your computer boots, it usually has to do with BIOS settings. More specifically, new hardware or the CMOS battery. The sections below contain suggestions and steps on what to do when your computer prompts you to enter setup each time it starts.
New hardware was recently installed
If new hardware was recently installed in your computer, you may receive the prompt "Press F1 or F2 to enter setup". One reason may be that the BIOS (basic input/output system) needs you to verify the configuration of the new hardware. Enter the BIOS setup, verify or change your hardware settings, save your configuration, and exit. If you continue to receive the "Press F1 or F2 to enter setup" message, continue to the next step.
Error or confliction with settings in BIOS
If no new hardware was added or you continue to get the message mentioned in the previous section, press the indicated key to enter setup as the prompt has instructed. Ensure all basic settings appear normal. Essentially, we're trying to verify no errors or conflicts exist in BIOS.
If the time and date displayed aren't right, your CMOS battery may be bad. To check, set the correct time and date, save the settings, and then reboot. If, after rebooting, the time and date are still wrong, replace the CMOS battery. See the next section for details.
If the time and date are fine, and everything else appears to be okay, try resetting the BIOS values to their default settings.
CMOS battery is bad or failing
If you continue to receive the prompt to enter setup and you have attempted the suggestions above, your CMOS battery is bad and should be replaced.