Note the location of any cables that need to be disconnected. The battery is circular, about the size of a dime, but as thick as two to three stacked dimes.ĭo not disconnect or remove anything yet. If contacting the motherboard manufacturer failed, you will have to remove the battery. Locate the CMOS battery while you have the case open. The motherboard battery is round and fairly flat. The brand name could be printed anywhere or, sometimes, not at all. A flashlight and magnifying glass are especially useful for a clear view of the motherboard. Examine the motherboard for a brand name.Ī good place to start searching is near the processor, the large square box on the motherboard. Printing on a motherboard can be hard to see without a magnifying glass. Look for the motherboard, the largest circuit board inside, attached to one side of the case. Use the screwdriver to loosen and remove the screws from the case. Ground yourself by wearing an antistatic wristband clipped to the metal case, or touch something metal before you open the case. Unplug the monitor and all peripherals from the PC, including speakers and USB devices. You will need to open the computer case if you do not know the motherboard brand.Įlectrostatic discharge can reset a BIOS password. BIOS passwords are case sensitive.Ĭontact the motherboard's manufacturer if the back-door passwords failed.įind the motherboard's website for technical support. Try using the following back-door passwords to access the BIOS: phoenix, PHOENIX, CMOS, BIOS. So-called back-door passwords may help you access the BIOS. If the manufacturer is unable to help locate a password, standard back-door passwords may help. Have your computer model number and serial number ready. Sometimes you can gain access to the BIOS through the keyboard, depending on the computer, but typically the solution is mechanical.Īll computer manufacturers have websites with technical support available. If the password is lost or has been reset through electrostatic discharge, it would be impossible to guess without the aid of computer forensics. The Standard CMOS Features is the most commonly used area of this BIOS and enables users to set the time, date, disk drive settings, and other values.Īnother commonly accessed area of the BIOS, the Advanced BIOS Features section enables users to change numerous settings in their computers BIOS.The basic input/output system, or BIOS, is a program that acts as a digital liaison, managing communications between peripherals and the operating system.īecause the BIOS is critical to the operation of a PC, some computer manufacturers and workplaces employ a password for security. Due to the amount of available illustrations for each of the difference screens, we created the below menu to help skip to the desired section. This section enables you to access each of the other sections of the BIOS. Main screenīelow is an example of the main screen of the Phoenix - Award CMOS setup. Options are subject to change based on the manufacture date of the BIOS, the version, and the manufacturer of the computer or motherboard. Below are example illustrations of the Phoenix - Award BIOS and a brief description about each of the categories. The Phoenix - Award BIOS has numerous available options displayed to help customize and optimize your computer. Finally, once the values are changed pressing F10 saves the values and exits the CMOS setup. To change the values, press + or -, PgUp or PgDn, or Enter. Navigating the Phoenix - Utilizing the arrow keys, a user can move between the available options on the screen. Like most computers using the Phoenix BIOS setup, each section of the Phoenix BIOS is broken into multiple pages to offer more options and make information easier to locate.
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