Bios screens can be reached at boot up, when you boot up, you need to press either f9,f8 or delete to enter set-up, and then you can move about the set-up screens to find your bois info.
it would be easier if you could give more details of your system, as this would help with what buttom to press at boot-up. I.E, mine I press delete to enter set-up having a Asus motherboard, but my old compaq used I think f9, hopefully your manaual should tell you.
Apologies for that. Won't happen again. I can press F8 buring boot up to bring up another menu, but I'm afraid I'm out of my depth. I want to check my bios date in relation to a warning box that pops up re. security certificates (telling me they are out of date or not yet started). The warning is incorrect as the site certificates are OK. Any ideas?