Clover stopped booting Win 10 after CMOS reset

[FishCow]

Hi all
For years now I have been dual booting OS X and WIN 7 / 10 from clover without any issue.
WIN and OS X are on separate drives.
My computer needed a CMOS reset recently after it wouldn't power on.
Since the CMOS reset - whenever I try to boot WIN 10 from Clover I get a "Boot loader can't be found" message - something to that effect anyway . . .
I can boot WIN 10 fine by just overriding with F12 and booting straight to WIN 10, so all is not lost.
I just wonder why I get the boot loader missing message when trying to boot from Clover.
I've always booted Windows in legacy mode - not UEFI.
Regards

 

[Going Bald]

When you reset the CMOS did you boot to BIOS and re-select everything you selected at first installation?