Using the Command Prompt in Windows
Ø Click Start menu, and type CMD in the search box, Select CMD.
Ø The command prompt windows appears, Type wmic bios get smbiosbiosversion. The string of letters and numbers following SMBBIOSBIOSVersion is your BIOS version. Write down the BIOS version number.
Find BIOS Version on Windows using the BIOS Menu
Ø Reboot your computer
Ø Open the BIOS menu – As the computer reboots, press F2, F10, F12, or Del to enter your computer BIOS menu. You may need to press the key repeatedly, as boot times for some computers can be very quick, ( Note this may not worked on Win 8 and Win 10, Please find instructions below for win 8 and 10
Ø Find the BIOS version. In the BIOS menu, look for text that says BIOS Revision, BIOS Version, or Firmware Version.
Open Computer Management
Then click on Device Manager and under Mice and other pointing devices