Windows 10: advanced startup, undoing changes, bsod

whenever i choose an option at advanced startup my pc just restarts instead of doing the the task i clicked on which is reset. i want to reset because whenever i start the pc it says could not complete updates undoing changes and after sometime from opening it just takes to bsod which says we will restart for you and gives a different error code each time and whenever i try another way to fix it does not work. all those problems came at the same time after my pc was running smoothly.

:)

 

Can't get GPU-Z to start with Windows 8.1 startup

I'm not sure how to do that. Could you list the steps for a noob?

 

undo system restore

Yes in the system restore options there will be an Undo button to go back.

1. If you boot to advanced startup options from within Windows 10, you must be signed in as an administrator to undo a system restore.

2. Click/tap on Troubleshoot.

3. Click/tap on Advanced options.

4. Click/tap on System Restore.

5. If you booted to advanced startup options from your Windows 10 installation media, click/tap on your listed Windows 10 OS, and go to step 7 below.

6. If you booted to advanced startup options from within Windows 10, click/tap on an administrator account you want to provide credentials for.

A) Enter the password for this administrator account, and click/tap on Continue.

7. Click/tap on Next.

8. Select the restore point that has Undo for its "Type", and click/tap on Next.

See if that helps.

 

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?