what can you do in the bios

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You can also use the systeminfo command from the command line to view the BIOS version and other system information by following the following steps. After this, BIOS checks for the boot options. Chris has written for The New York Times, been interviewed as a technology expert on TV stations like Miami's NBC 6, and had his work covered by news outlets like the BBC. BIOS instructs the computer on how to perform basic functions such as booting and keyboard control. It resides on a chip on your computer’s motherboard and helps your PC operate. Whatever the screen looks like, you can use your keyboard or mouse to navigate through it. Both offer interfaces you can access to change a variety of system settings. All Rights Reserved. Some PCs with UEFI firmware also require you to press one of these keys during the boot-up process to access the UEFI firmware settings screen. You’ll generally see help information displayed somewhere on your screen, providing more information about what each option actually does. If a device detail is changed or if you want to make a change, you have to access the BIOS. The first thing the BIOS does is check the information stored in a tiny (64 bytes) amount of RAM located on a complementary metal oxide semiconductor (CMOS) chip. To enter the BIOS, wait until your computer beeps during boot, then press the key required to enter the BIOS or Setup, typically displayed on the BIOS boot screen (e.g. It wasn't until the 1990s that the BIOS Setup Utility (also known as the BIOS Configuration Utility, or BCU) became common practice. Using the systeminfo command line command. You’ll see the keys you can use spelled out at the bottom of the screen. Clear the CMOS (BIOS) 3. UEFI stands for “Unified Extensible Firmware Interface”. Many low-level system settings are only available in your BIOS. BIOS stands for basic input/output system. You'll need this … Here are some common things you can do in most BIOS systems: Before updating BIOS, check what version is currently running on your computer. The BIOS is low-level system software that should “just work” without getting in your way. We’ve even seen modern PCs refer to their UEFI firmware settings screen as the “BIOS”. The actual BIOS or UEFI settings screen looks different on different PC models. The BIOS in some of the first IBM computers were not interactive like modern-day implementations but instead only served to display error messages or beeps codes. Some modern UEFI PCs have graphical interfaces you can navigate with a mouse and keyboard, but many PCs continue to use text-mode interfaces, even with UEFI. Saving these changes and restarting the computer applies the changes to the BIOS and alters the way BIOS instructs the hardware to function. When you’re done, select the “Save Changes” option to save your changes and restart your computer. Common keys you may need to press include Delete, F1, F2, and Escape. One way to avoid this problem is to use what's called a "boot lock" section of the BIOS software which gets updated on its own apart from the rest so that if corruption ensues, a recovery process prevents damage. BIOS then checks if there is an error with the hardware. However, your BIOS checks whether there are any bootable CDs or floppies, just in case. Once you've launched the BIOS program then you'll probably first see the Main menu. BIOS is also used to identify and configure the hardware in a computer such as the hard drive, floppy drive, optical drive, CPU, memory, and related equipment. Open the Windows command line. But UEFI firmware and the BIOS are fairly similar. You can enter the system BIOS or Setup on a Dell PC by pressing F2 at the Dell loading screen. Some PC users will be familiar with the instruction to press a key during bootup to access BIOS, but Windows 10 allows for an easier method to enter the BIOS menu. In computing, BIOS (/ ˈbaɪɒs, - oʊs /, BY-oss, -⁠ohss; an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is firmware used to perform hardware initialization during the booting process (power-on startup), and to provide runtime services for … The only caveat is that the BIOS is a startup environment, which means that you can't access it when Windows 10 is running. PCs that shipped with Windows 8 or 10 may require you access the UEFI settings screen via Windows 8 or 10’s boot options menu. Any custom options were instead made by modifying physical switches and jumpers. Even if you know what you’re looking for, it’ll be in a different place on different computer’s settings screens. The computer will reboot into a special boot options menu. How to Access BIOS The BIOS is accessed and configured through the BIOS Setup Utility. When you power your computer on, your BIOS takes control, starting the power-on self test (POST) and passing control over to the boot loader, which boots your computer’s operating system. BIOS is pronounced as by-oss and is sometimes referred to as the System BIOS, ROM BIOS, or PC BIOS. If it doesn't, and the motherboard supports DualBIOS, that BIOS backup can be restored to overwrite the corrupted version. The CMOS Setup provides detailed information particular to your system and can be altered as your system changes. If you can’t find the option you’re looking for in your BIOS, consult the manual or help website for your PC. Here's how. Some settings are less dangerous than others. controls all of the low-level functions of your PC, and you'll need to access it if you want to make any changes. BIOSes are small programs with sizes that are close to 16 MB. The following are some of the more popular BIOS vendors: Award Software, General Software, and Microid Research were BIOS manufacturers acquired by Phoenix Technologies. BIOS is a program that comes with your computer and it generally resides on EPROM so that the processor can access it. You can access BIOS Setup utility screens from the following interfaces: Use a USB keyboard, mouse, and VGA monitor connected directly to the server. For example, you could list … Whatever the menu – BIOS or UEFI – you are working in, be very attentive and only modify the settings when you are confident you know what you are doing and why. BIOS access and configuration on PC systems are independent of any operating system because the BIOS is part of the motherboard hardware. What Is Bios and What Does It Do? Interruptions could brick the motherboard and render the computer unusable, making it difficult to regain functionality. By submitting your email, you agree to the Terms of Use and Privacy Policy. However, nowadays, BIOS has slowly been being replaced by UEFI (Unified Extensible Firmware Interface) in newer computers, which offers benefits like a better user interface and a built-in, pre-OS platform for accessing the web. For example, only systems with UEFI firmware support Secure Boot to secure the boot process against rootkits. To find the exact key you need to press, consult your PC’s manual. BIOS loads your OS, maintains your hardware and allows you to control the low-level functions of your computer. BIOS may refer to any of the following:. Type msinfo into the Start window, then click System Information at the top of the Start window.Step 3, Check your computer's model name. However, one does feel the need to access this component, and therefore, through this article, we shall address the issue when you can’t enter BIOS. Since we launched in 2006, our articles have been read more than 1 billion times. The BIOS firmware is non-volatile, meaning that its settings are saved and recoverable even after power has been removed from the device. Either way, you’ll have to restart your PC. (Figure 2) Figure 2: One Time Boot Menu. BIOS stands for Basic Input/Output System. In general, your computer's basic input/output system shouldn't need to be updated that often, but sometimes you have to view or even edit your computer's BIOS. Memory - Direct the BIOS to shadow to a specific memory address Security - Set a password for accessing the computer Power Management - Select whether to use power management, as well as set the amount of time for standby and suspend Exit - Save your changes, discard your changes or restore default settings But be careful in your BIOS or UEFI settings screen! It’s the successor to the traditional BIOS. Changing your boot order is less risky, but you can even run into trouble there. The Basic Input/Output System (BIOS) is the initial low-level code that allows your PC to start up correctly when it’s first powered up. Since 2011, Chris has written over 2,000 articles that have been read nearly one billion times---and that's just here at How-To Geek. You can almost always use the Quick Boot option (Typically the F8 key) which will allow you to quickly choose which device you would like to boot off of. There’s a different process for accessing the BIOS or UEFI firmware settings screen on each PC. BIOS, Basic Input Output System, is a firmware embedded on the chip of PC’s motherboard. Short for Basic Input/Output System, the BIOS (pronounced bye-oss) is a ROM chip found on motherboards that allows you to access and set up your computer system at the most basic level. So, it is good to know how to access it. It doesn't matter if a computer is running Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Linux, Unix, or no operating system at all—BIOS functions outside of the operating system environment and is no way dependent upon it. It allows you to access your computer system at the most basic level. The BIOS (Basic Input/Output System) is critical to the proper operation of your computer. The option is named “Virtualization Technology” on this PC, but is often named  “Intel Virtualization Technology,” “Intel VT-x,” “Virtualization Extensions,” or “Vanderpool” instead. What to Do if PC is Stuck on BIOS Screen 1. Thus, if you want to: change the boot order; The above article may contain affiliate links, which help support How-To Geek. However, it's also incorrectly referred to as the Basic Integrated Operating System or Built-In Operating System. E.1 Using BIOS Setup Utility Menu Items . BIOS supports several hardware configuration options that can be changed through the setup utility. This usually contains only some legacy settings and a few options that the BIOS … BIOS stands for “Basic Input/Output System”, and is a type of firmware stored on a chip on your motherboard. For example, the option to enable Intel’s VT-x virtualization technology is often somewhere under a “Chipset” menu, but it’s on the “System Configuration” pane in the screenshot below. PCs with a BIOS will have a text-mode interface you can navigate with your arrow keys, using the Enter key to select options. UEFI offers support for boot volumes over 2 TB in size, support for more than four partitions on a drive, faster booting, and enables more modern features. The Basic Input-Output System (BIOS) is an essential set of routines in a PC, which is stored on a chip on the motherboard. RELATED: How to Boot Your Computer From a Disc or USB Drive. To access your BIOS, you’ll need to press a key during the boot-up process. The options look like: Boot from CD-ROM, Boot from Hard Drive, etc. But UEFI firmware and the BIOS are fairly similar. It initializes your hardware before booting an operating system from your hard drive or another device. It initializes your hardware before booting an operating system from your hard drive or another device. Join 425,000 subscribers and get a daily digest of news, comics, trivia, reviews, and more. lock down your computer with a boot password, enable Intel’s VT-x virtualization technology, How to Use Google Maps Street View in Split Screen on Android, How to Practice Your Presentations with PowerPoint’s Presenter Coach, How to Enable Google Chrome’s “Reading List” on Android, How to Add, Edit, or Delete Recurring Events in Google Calendar, How to Disable Notification Center on iPhone Lock Screen, © 2021 LifeSavvy Media. When you start your computer, the computers boots the BIOS, which configures your hardware before handing off to a boot device (usually your hard drive). It's BIOS that's responsible for the POST and therefore makes it the very first software to run when a computer is started. You should only change settings if you know what they do. Unlike an operating system like Windows, which is often downloaded or obtained on a disc and needs to be installed by the user or manufacturer, BIOS comes installed from the moment the machine is manufactured. Michael Heine is a CompTIA-certified writer, editor, and Network Engineer with 25+ years' experience working in the television, defense, ISP, telecommunications, and education industries. Modern computers predominantly ship with UEFI firmware, which is the successor to the traditional BIOS. Whether your computer has a BIOS or UEFI firmware doesn’t matter much in most situations. Next to the "System Model" heading, you'll see a list of numbers and letters; this is your computer's model name. Chris Hoffman is Editor-in-Chief of How-To Geek. Poke around and find whatever setting your looking for. Many low-level system settings are only available in your BIOS. This option reset your computer’s BIOS or UEFI settings to their defaults, undoing all your changes. Both are low-level software that starts when you boot your PC and sets things up. The BIOS Setup Utility is accessed in various ways depending on your computer or motherboard make and model. You can also select a “Discard Changes” option to restart your PC without saving any of the changes you made. If you built the PC yourself, look at the manual or help website for your motherboard. All available options in BIOS are configurable through the BIOS Setup Utility. If you have a problem after making a change, you can return to your BIOS or UEFI firmware settings screen and use an option named something like “Reset to Default Settings” or “Load Setup Defaults”. BIOS is also used to identify and configure the hardware in a computer such as the hard drive, floppy drive, optical drive, CPU, memory, and related equipment. The BIOS is accessed and configured through the BIOS Setup Utility. Restore Default Settings of BIOS 2. Step 1, Open Start . If you built your own PC, consult your motherboard’s manual. Login into the BIOS by hitting the Delete key or F2 key (depending on your motherboard). Type systeminfo and press Enter to get a screen similar to the example shown below. What Does a PC’s BIOS Do, and When Should I Use It? He writes troubleshooting content and is the General Manager of Lifewire. When you switch on your computer, the processor gives control to the BIOS. Select Troubleshoot > Advanced Options > UEFI Firmware Settings to access the UEFI firmware settings screen. To access it, hold down the Shift key as you click the “Restart” option to restart your computer. What does the BIOS do? He's written about technology for over a decade and was a PCWorld columnist for two years. Or by pressing F12 and selecting BIOS Setup from the menu. The BIOS manages the order of system boot items, such as floppy (yes, they still exist), CD/DVD optical drive, flash drive and hard drive. 1. Delete, F2, F10). All modern computer motherboards contain BIOS software. As it works with the input/output device, it doesn’t need to be changed frequently. Various Boot options are organized in a sequential manner in the order of their priority. Caution: Be careful when altering BIOS settings. The picture below is an example of what a BIOS chip may look like on a computer motherboard. Get the Latest Tech News Delivered Every Day, How to Access CPU and Memory Timing Settings in the BIOS, How to Access BIOS Setup Utility for Major BIOS Manufacturers, How to Check the Current BIOS Version on Your Computer, BIOS Setup Utility Access Keys for Popular Computer Systems, How to Fix the Inaccessible Boot Device Error in Windows 10, How to Fix 'PXE-E61: Media Test Failure, Check Cable' Error, check what version is currently running on your computer, Enable or Disable the Quick Power On Self Test (POST), Enable or Disable Onboard Floppy Controller, Enable or Disable Onboard Serial/Parallel Ports, Change Which Display is Initialized First on Multi-Display Setups, Reset Extended System Configuration Data (ESCD), Enable or Disable BIOS Control of System Resources. How-To Geek is where you turn when you want experts to explain technology. Tim Fisher has 30+ years' professional technology support experience. BIOS or Basic Input Output System is often difficult to access when one is working on Windows 10. Click the Windows logo in the bottom-left corner of the screen.Step 2, Open System Information. If you’re unfamiliar with what BIOS is, it’s basically your computer’s input and output system. BIOS might check if the full update has been applied by verifying that the checksum matches up with the intended value. Use a terminal (or terminal emulator connected to a computer) through the serial port on the back panel of the server. Join 425,000 subscribers and get a daily digest of news, geek trivia, and our feature articles. Repairing Your Computer Using the Help of Windows 10 Bootable Media It is important since it includes a test called POST to check if there are hardware-related issues with the computer and loads the boot loader to initialize Windows. Modern BIOSes offer user interfaces (Setup Utility), where the user can configure hardware settings. Meddling with certain settings (especially those related to overclocking) you can make the computer’s work unstable or even damage its hardware. Image Credit: ryuuji.y on Flickr and  Thomas Bresson on Flickr. You generally don’t need to do this. At times, you might need to boot from a CD or a flash drive, but most of the time you boot from your hard drive. You can actually have a look at this by going into the BIOS while booting. BIOS instructs the computer on how to perform basic functions such as booting and keyboard control. The BIOS pictured is of an early AMIBIOS, a type of BIOS … This key is often displayed during the boot process with a message “Press F2 to access BIOS”, “Press to enter setup”, or something similar.