How to Check BIOS Version

Method 1 of 4:

Click the Start menu, and then click Run.
1. In Windows 8, right-click the Start menu, and then click Run. You can also access this menu by pressing the WIN + X keys.^{[1] X Research source}
In the Run dialog box, type cmd.
The Command Prompt window opens.
1. The Command Prompt is a program lets you control your computer with text commands.
2. Type wmic bios get smbiosbiosversion. The string of letters and numbers following SMBBIOSBIOSVersion is your BIOS version.^{[2] X Research source}
Write down the BIOS version number.

Method 2 of 4:

Reboot your computer.
Open the BIOS menu. As the computer reboots, press F2, F10, F12, or Del to enter your computer BIOS menu.^{[3] X Research source}
1. You may need to press the key repeatedly, as boot times for some computers can be very quick.
2. Find the BIOS version. In the BIOS menu, look for text that says BIOS Revision, BIOS Version, or Firmware Version.
Write down the BIOS version number.

Method 3 of 4:

Restart your computer. While the computer reboots, press and hold the Shift button until you see the boot options menu.
Open the Troubleshoot menu. On the boot options screen, click Troubleshoot.
Open UEFI Firmware Settings. On the Advanced options screen, click UEFI Firmware Settings.
1. If you don't see UEFI Firmware Settings, your computer didn't have Windows 8 pre-installed, and you'll need to get the BIOS version via the command prompt or the BIOS menu.
Click Restart. The computer reboots into the UEFI firmware settings screen.
Look for the UEFI version. Depending on your computer hardware, you'll see different information. The UEFI version will usually be under the Main or starting tab.
Write down the UEFI number.

Method 4 of 4:

Open About This Mac. Click the Apple menu, and then click About This Mac.
Get the Mac system report. Click More Info, and then click System Report.
Get the Boot ROM Version and the SMC Version. Under Hardware Overview, write down the Boot ROM Version and SMC Version (system).^{[4] X Research source}
1. The Boot Rom Version is the software that controls the Mac booting process.^{[5] X Research source}
2. The SMC Version is the software that controls the power management on the Mac, such as when it goes to sleep.^{[6] X Research source}