Windows 10: Getting only one Advanced option in the advance startup menu and DISM Error. PLEASE READ FULL

I have discussed all my problems and the issues I faced so that troubleshooting could be easier. Please read it patiently as I am very sad with all these issues.
I have described the current issue in the last. PLEASE HELP me in resolving them.

After installation of windows10 from windows website of iso download I installed in my d drive of my pc because I was having windows 7 in my pc. After few days I got the update of 20H2 version. And the problem started to happen in this way:
1. After few days suddenly I was not able to type anything in the search box so reenabled the search services but this won't work. Suddenly one I started my pc and I saw my local account get automatically converted into microsoft onlune account. I was shocked however I turn on my internet connection and try to login but I was not able to type anything when it asked for password. I was truly disappointed and was really crying. Then I reset the pc with keeping personal files by going in the advanced option in which all the options were given and then I was able to login and then I changed the online account into offline account.

2. Everything was fine with the pc after resetting yhe pc so yesterday I thought to delete windows 7 OS from my pc actually I dual boot between windows10 and windows 7 so every time when I make system restore points it gets automatically deleted when I boot to windows10 so finally I delete my windows 7 entry with 'easybcd' and then deleted the partition in which windows 7 was installed and allocated a new partion of d and restart it and I was shocked to not able to boot as it was written clearly "No operating system found" and I was again in panic then I watched a video and do the following steps:
1.Put my bootable usb pendrive.
2.Open command line type the following command: aC:
battrib -h -a -s
cdir
d"bcdboot C:\Windows /S C:" without inverted commas" and press enter and now I was able to boot into my pc.

This was everything that windows community should know.
Now the problem prevailing at present:


1. I ran the DISM /Online /Cleanup-Image /Restore Health and I got error 0x800f081f "The source file could not be found" I tried everything with again installation of .net framework from sxs folder but did not help.


2. Decrease in system performance and long booting time


3. I restated the pc with advanced statup for advanced option but there I get only one option of start up repair.The other options were missing.
Please see the screen short.


:)

 

No Troubleshot option in Advanced startup menu..

Sorry I know this is old but I have a similar problem there is only the shut off your PC option , when I try to access advanced option, whether through windows even holding down the shift key,

 

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 Advance Startup mode not showing menu (only power off menu)

Hi Dany,

I realize the inconvenience you are experiencing with Windows Startup options. I will certainly help you.

I suggest you to try the steps below and check if this helps in enabling the Advance boot option.

• Use any administrator account to sign-in/log on to your Windows 10 computer.
• Once on the desktop window, right-click the Start button from the bottom left corner.
• From the displayed context menu, click the Command Prompt (Admin) option.
• In the opened Administrator: Command Prompt interface, type the
  BCDEDIT /SET {DEFAULT} BOOTMENUPOLICY LEGACY command.
• Hit Enter to execute the command.
• Close the command window when done.
• After this, left-click the Start button.
• Click Power from the Start menu.
• From the displayed options, click Restart.

Now follow the below steps and check if you are able to see the
Advance boot options.

• 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.
  

Write to us, if you need further assistance.

Thank You.