Windows 10: Advanced options do not open why?

I've been trying for 4 hours to open the advanced options in the locked state but it doesn't work so I tried (Shift + restart) doesn't work (F8) and (Fn+F8) doesn't work how do I get there without booting? I have a Thinkpad t420 with Windows 10 Pro

HELP!!

:)

 

Critical Service Failed - Automatic Repair and Advanced Options

Update:
Tried the Repair disk. Still back to "Your pc ran into a problem", "Preparing automatic repair" followed by Advanced Options which have been tried again.

Would anyone recommend:

• bootrec.exe /rebuildbcd
• bootrec.exe /fixmbr
• bootrec.exe /fixboot

Otherwise, I have a bootable Win PE file waiting to be burned on to USB key, as suggested by other Forum user, but unsure what to do with it when (or if) it boots up the laptop.

 

No Troubleshot option in Advanced startup menu..

Hello,

Thank you for posting your query on Microsoft Community.

It would be grateful if you can reply to this question in order to assist you further:

• How exactly are you accessing the Advance boot option?
• Are you using Windows 10 installation disk to access the Advance start up options or trying to access through Windows?

I suggest you to follow the below path and check if you are able to see the Troubleshoot option:

• Open Settings, and click/tap on the
  Update & security icon.
• 
  Click/tap on
  Recovery on the left side, and click/tap on Restart
  now under Advanced startup. Check if you are able to view the
  Troubleshoot option.
  

Let us know the status of the issue. We will be glad to assist you with the issue.

Thank you.

 

windows 10 no advanced-startup-options, so no startup settings

when i did 1. 2. 3. steps i checked and problem was SOLVED
but after 4. 5. 6. 7. steps i checked and no advanced startup options again

1. Make a complete backup image of your current HD including all partitions to an external HD using macrium reflect . Once done, disconnect all USB devices from the PC. Assuming now you only have one HD connected to the PC which you will be installing Windows.
   IMPORTANT: Also create a Macrium Rescue disk to boot from later on.
2. Boot up your Windows installation USB/DVD. On the first screen, Hold SHIFT + F10 to open Command Windows then type:
   Diskpart
   select disk 0
   clean
   exit
3. Click Next, Choose Custom, select the unallocated partition then click Next (Do not format), when asked for Product ID key, click on "Skip this step"/"Do it later". Continue the Installation.
4. Once done. With the external HD connected, Reboot your PC with the Macrium Rescue disk, select the image that you created in step 1 as the Source.
5. Select your current HD/SSD as Destination disk
6. Restore only C: Drive to it. ie. overwrite the new C: Drive with your backup C: Drive.
   NOTE: See screen shot on how to perform this step
7. Disconnect all the external devices. Reboot. Windows should perform a startup repair.

till 4. step there was no windows 10 key activeted and problem vas solved
but after step 7 i checked key and it was not the same which i purchased, why did that change? i activated purchased key again.
so is the problem to be a windows 10 key on my pc?
or do some drivers prevent advancedstartup options?