Search for any fast boot settings (or whatever it's called on your system) in the menu and turn it on. Every motherboard is different, so poke around your UEFI/BIOS settings to see if there are any ...
Run msconfig from the Start Search box (or after hitting Win+R), then head to the "Boot" tab, check "Number of processors," and change the drop-down box to fit your processor. I haven't tested this ...