How to replace rEFInd bcuz M$ locks linux out of your system if M$ installed first.
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This will be long so get your salsa ready.
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1. Get your rEFInd from sourceforge
Since we are installing INTO windows, dl the zip.

2. extract to a folder.

2-a-: Install themes if you want any or edit the config if you want/need to, at this stage.

3. open a cmd as Admin and cd to the refind's folder.

4. mount system volume
`mountVol S: /S` will mount it to S:

5. use xcopy to copy as system
`xcopy /E refind-bin-x.xx.x\ S:\EFI\refind`

6tynice: go to System volume and to the refind folder
`S:`
`cd EDI\refind\refind`

7:Set rEFInd as Windows Boot Manager
`bcdedit /set {bootmgr} \EFI\refind\refind\refind_x64.efi`
(It's possible to use ia32 or aa64 for different architectures)

At this point, try plugging a linux thumb drive and restart your computer. Windows Boot Manager should be deactivated and should show refind.
You can use mouse and keyboard to select an OS boot or just set config to start one automatically unless you are holding a "power" button.
rEFInd also offers "fallback" boot for linux, which boots the efi from rEFInd and not from syslinux.