How to stop showing: "To boot into the rescue and recovery environment press F11"

[RealBlackStuff]

Just installed W7 on an Ideapad Y550 for a customer, using T420 recovery disks.
Installation went fine, everything works.
I then deleted the recovery partition and extended the W7 partition with that new free space.

But every time that machine boots, it still shows: "To boot into the rescue and recovery environment press F11".
The BIOS has no option to turn off displaying Option keys or change Predesktop settings or whatever.
How can I get rid of this F11 message?



EDIT:
found this for older machines (W2K/NT): https://support.lenovo.com/my/en/solutions/migr-4ufuyk

[GomJabbar]

My guess is you need to replace the MBR. You could install grub or a similar bootloader, or you could use Windows to repair the startup, probably using BCDEdit.

[RealBlackStuff]

Thanks, but there is no F11 reference anywhere, using BCDedit or EasyBCD.
Google is useless for this.
Still looking for help.

Should I try and repair/rewrite the MBR?

[GomJabbar]

Should I try and repair/rewrite the MBR?

That's what I think.

[RealBlackStuff]

That did it.
If anybody is interested:
- boot from a (non-recovery) original W7 disk (same 32/64 version as what is installed, otherwise no-go!)
- select Repair
- select Command prompt
- type in: bootrec /fixboot [press Enter]
- type in: bootrec /fixmbr [press Enter]
- type in: exit [press Enter]
- select Restart
- remove W7 CD