1) getting into the BIOS has nothing to do with any OS you may have installed.
It's either a major hardware issue, or the KEYBOARD press isn't registered (bad keyboard, bad USB port, or it's a wireless keyboard).
2) What do you mean by "it just kind of sits there"?
3) I suggest you:
a) unhook cables from HDD and SSD's (from rear of drive) and any other non-essential things like USB drives/printer/mouse, then
b) see if you can enter BIOS
c) if not, try a different USB slot (top one usually), and a different Keyboard
4) Once you can boot into the BIOS we need to sort out your bootloader:
a) insert ONLY the Windows drive and see if it works (I don't know where the bootloader is)
b) if the Windows drive won't boot, then you will want to REPAIR that with a Windows Install disc. Lots of help online, but you'd probably start with fixing the MBR.
Here's how: http://www.howtogeek.com/howto/32523/how-to-manually-repair-windows-7-boot-loader-problems/
Other:
You could also upgrade to Windows 10 (which is free until July 29th) which will also repair your installation.
a) download and run the MS media creation tool:
https://www.microsoft.com/en-ca/software-download/windows10
b) create a DVD or USB version
c) will create both HOME and PRO options but choose the one that matches your W7 version when installing
c) make sure ONLY the W7 drive is attached
d) boot to W10 install
e) choose W10 Home 64-bit if applicable
f) choose to keep all programs and files
(you could install this to a new SSD if you wanted but it's a hassle for most people to reinstall programs, though you can keep all your Steam games. Just keep the "Steamapps" folder and move that to a Steam folder you create on the HDD but I don't want to get too confusing).
g) do NOT enter a key (which you won't have) just SKIP that part. MS will recognize your W7 install and assign W10 a key automatically.
h) test everything.
i) if working fine you can go into "cleanup files" and delete the W7 "OLD" folder which will take up a lot of space.