Updated to f20, but can only boot f19.

[William]

This is a Fedora - windows dual-boot system, 64-bit.

This afternoon, I updated to Fedora-20 using fedup.  But Fedora-20 is 
not offered in the boot window.  I see three options for Fedora-19, and 
a windows option.  I can sign on to Fedora-19, but the left and right 
screens are reversed!  (This is a dual monitor system.)  This is a home 
system.

I'm not a sys. admin.  How do I get this system to boot up Fedora-20?

thanks,
Bill.