Hi Steph,
The following article might help you too (it has options based on the operating system on your computer).
[link|https://www.sony.com/electronics/support/laptop-pc-vpc-series/vpceg37fm/articles/00049036|How to access the computer BIOS,…] (please note this is for model number VPCEG37FM and if your system model number is different, please share and will look up the correct post for you).
Any questions please let me know. Thanks