Cannot scan the pc using cmd

Problem isn't about that ****, problem is with the error : your pc run into a problem and needs to restart . So, help me fix that problem first then we should fix the chkdsk thing :D 

All the troubleshooting responses so far has been based on your OP Cannot scan the pc using cmd

'Your PC ran into a problem and need to restart' is entirely a different/separate error and you should have opened a new thread for that.

Having said that, I'm assuming at this point you can't access/boot into you system.

The cause of this error could be a corrupt registry, corrupt system files, or corrupt drivers. To resolve the error you should try repairing your Windows installation (while keeping your files) or to undo the changes you have made to the registry prior to error appearing.

Find instructions on how to repair your Windows installation here.

If you still can't access your system, follow these steps to undo changes to the registry:Note: The recovery media you'll need for this process should be a CD/DVD not USB.

- Insert the installation drive you own or which you have just created and boot your computer. The initial screen will differ depending on the operating system you have installed.

• Windows Setup should open prompting you to enter the preferred language and time and date settings. Enter them correctly and choose the Repair your computer option at the bottom of the window.
• The Choose an option screen will appear so navigate to Troubleshoot >> Advanced options >> Command Prompt. Make sure you choose the Administrator account in order to continue!
• Type in the command below and hit enter, in order to navigate to the System32 folder on your hard drive:

CD Windows\System32

• Now, type(the first, hit enter, then the second, hit enter) the two commands below to switch over to the config folder and display the files and folders inside the folder inside Command Prompt.

CD config

DIR

• Check to see if you are able to find a folder called RegBack. It should be listed with a more recent date. If you locate it, type(the first, hit enter, then the second, hit enter) in the two commands below in order to navigate to this folder and list out its contents.

CD RegBack

DIR

• In the list of files which will appear, you should be able to see these basic five files. DEFAULT, SAM, SECURITY, SOFTWARE, and SYSTEM
• Now type(the first, hit enter, then the second, hit enter) in the six commands below

CD..

REN DEFAULT DEFAULT1

REN SAM SAM1

REN SECURITY SECURITY1

REN SOFTWARE SOFTWARE1

REN SYSTEM SYSTEM1

• Now type(the first, hit enter, then the second, hit enter) in the last two set of commands below

CD RegBack

COPY * C:\WINDOWS\System32\config

This will copy the backup files from the RegBack folder to the config folder, replacing the old, corrupted version of the registry with older files which should be able to boot your computer.

• A message will be returned stating that five files were copied successfully. Navigate back to the Troubleshoot menu and choose to turn off your PC. After it boots again, you should be able to access your computer normally once again.

I did this before , I saw a video in youtube and he told me like you told me and I followed his video step by step but it didn't worked . Bcoz there was a difference between his system and mine as shown in the image

those numbers that are shown in the image were zero in his case but in mine it's not zero as you can see

It doesn't matter if the file size is zero or not. However, since you completed the procedure and it didn't work, you should try System Repair, if you haven't done so already. If that too doesn't resolve the issue, you should perform a clean install of Windows.

I want to keep my files and I want to repair my computer , I have a Windows 10 Installation USB flash drive . So please tell me step by step how to repair my computer so that i can keep my files.

I want to keep my files and I want to repair my computer , I have a Windows 10 Installation USB flash drive . So please tell me step by step how to repair my computer so that i can keep my files.

• Connect the USB installation media you have created to your nonfunctional PC, and then turn it on.
• On the initial setup screen, enter your language and other preferences, and then select Next. If you don't see the setup screen, your PC might not be set up to boot from a drive. Check your PC manufacturer's website for info on how to change your PC's boot order, and then try again.
• Select Repair your computer.
• On the Choose an option screen, select Troubleshoot. From there, you can:

A) Restore from a system restore point by selecting Advanced options > System Restore. This will remove recently installed apps, drivers, and updates that might be causing your PC problems. Restoring from a restore point won’t affect your personal files.

B) Select Reset this PC to reinstall Windows 10. This will remove apps and drivers you installed and changes you made to settings, but lets you choose to keep or remove your personal files.

Follow the prompts accordingly to complete the Repair.