BIOS is firmware that is embedded on a small memory chip on the computers system board or motherboard.It acts as an interface between the computers hardware and the operating system.BIOS also contains instructions that the computer uses to perform basic instructions such as whether to boot from network or hard disk drive.To learn more about the BIOS options in your Dell computer, refer to the User Guide of your Dell computer.
Changing certain settings could prevent the computer from completing the power on self-test (POST) process, prevent the operating system from loading or suffer potential loss of data. Dell Optiplex 990 Bios Update Can OftenBIOS update can often fix problems, add features, or both to the BIOS. Dell Optiplex 990 Bios Software Current AndBIOS update contains feature enhancements or changes that help keep the system software current and compatible with other system modules (hardware, firmware, drivers, and software) as well as providing security updates and increased stability. Dell provides an easy-to-use self-installing update utility that allows this task to be performed easily. Errors during BIOS update may result in potential loss of data. Dell recommends running the laptop computer on AC power before proceeding with the update process. Check the Dell Drivers Downloads page and select the model or enter the Service Tag of your Dell computer. New releases of BIOS can provide improvements to hardware compatibility, improved diagnostics, increased stability, and security updates. You are then prompted to enter the recovery key to progress, and the system asks for this on each reboot. BIOS Recovery tool is software that is designed to recover a corrupted BIOS based on Boot Block Technology. The softwares main feature is to provide flexibility to recover the corrupted BIOS using a BIOS recovery file from the computers primary hard disk drive or an external USB key. Refer to the Dell knowledge-base article BIOS Recovery options on a Dell computer or Tablet for more information. In these cases, it is sometimes necessary to reset the BIOS or CMOS (Complementary metaloxidesemiconductor) to Factory Defaults or in other circumstances, clear the NVRAM (Non-Volatile Random Access Memory). ![]() Enabling this setting restricts a user from changing the BIOS or UEFI firmware settings. Kitts Nevis St. Lucia St. Vincent Grenadines Suriname Sweden (Sverige) Switzerland (Schweiz) Taiwan () Tajikistan Tanzania Thailand Togo Trinidad Tobago Tunisia (Tunisie) Turkey (Trkiye) Turkmenistan Turks Caicos Islands Uganda Ukraine United Arab Emirates United Kingdom United States Uruguay US Virgin Islands Uzbekistan Vanuatu Venezuela Vietnam Yemen Zambia Zimbabwe.
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