[CentOS] HP Envy EFI problem after BIOS update

> [root at gary ~]# efibootmgr -o 2002,2001,0003,0002

Try
efibootmgr -v -O -T   ## capital O, to delete the entire boot order and timeout
efibootmgr -v -o 3,2 -t 3


I think making the DVD or USB the default boot options is a bad idea,
I wouldn't do that. Use the boot manager on demand if you need to boot
DVD or USB. The things that should be listed first are the things you
want booted by default and then the next fallback.

The other thing to do is check HP's web site directly for an even
newer version of the firmware. It may be the one you have fixes a
particular bug Microsoft is bothered by but may have an NVRAM garbage
collection bug that they don't care about or don't know about (yet).


-- 
Chris Murphy