[Fix] A required device isn't connected or can't be accessed with error

We find 3 practical methods for you to fix 'Your PC needs to be repaired. A required device isn't connected or can't be accessed.', and the error codes along with the message are usually 0xc000000e, 0xc000000f, 0xc0000001, 0xc0000225, 0xc0000185...

How to Fix "A Required Device Isn't Connected or Can't Be Accessed" Error in Windows 10/8/7

Let's see what will happen if 'a required device isn't connected and can't be accessed' error occurs.

"My computer will not boot up at all. As soon as the power button is pressed, the Dell logo appears for a second and then a blue screen appears. It says "A required device isn't connected or can't be accessed. Error code: 0xc000000f". My computer has a problem where it will crash randomly. It was after one of these crashes that this issue appeared."

"I got a new laptop (Toshiba Satellite C850) with corrupted Windows 8 preinstalled. It was asking for repair, but when I try to boot from Windows DVD, it was not accepting. Always shows a blue screen with the following error message: Your PC needs to be repaired. A required device isn't connected or can't be accessed. Error code: 0xc000000f."

In conclusion, such a "PC needs to be repaired" error would disable users to access the system, and it's mostly because Windows cannot find the system files used for booting. If you're faced with the same problem that a required device isn't connected and can't be accessed, the following solutions will be very helpful.

Solution 1. Perform an Automatic Startup Repair

1) Boot from the Windows 10, 8 or 7 USB or DVD bootable media.
2) Click "Repair your computer".
3) Click "Advanced Options".
4) Click "Troubleshoot".
5) Click "Startup repair".
6) Follow the onscreen instruction.

Solution 2. Perform a Startup Repair Using Command​

1) Boot from the Windows 10, 8 or 7 USB or DVD bootable media.
2) Click "Repair your computer".
3) Click "Advanced Options".
4) Click "Troubleshoot" and then "Command Prompt".
5) Call these commands:
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd

6) The command fails? Try another suggested commands:

bootrec /scanos
bootrec /rebuildbcd
bootrec /fixmbr
bootrec /fixboot

Solution 3. Perform a System Recovery or Factory Reset PC

You can contact your manufacturer to help or do it by yourself using the bootable USB software.

1) System Recovery reformats the system drive (usually C:), reinstalls the original operating system, and reinstalls all the original hardware drivers and software.

2) Factory Reset removes all partitions, reformats the entire hard drive, reinstalls the original operating system, and reinstalls all the original hardware drivers and software.

Doing system store and factory reset also demands a Windows installation media, which you can create on a normal functioning computer.

Tip: How to create Windows system repair disk to repair Windows' a required device isn't connected and can't be accessed?

As you can see, a Windows installation media is essential when you're trying every suggested way to fix Windows' a required device isn't connected and can't be accessed error. So, to help avoid the embarrassing moment that you don't have one in the future, it's time to make a preparation with a simple Windows backup software.

Step 1. Prepare a USB drive which can be written and read.

Step 2. Launch and install EaseUS Todo Backup on the Computer B.

Step 3. Find and click "Tools" and choose "Create Emergency Disk".

Step 4. Choose the Boot disk location. You can create an ISO file, a bootable USB or CD/DVD disc.

Step 5. Then click "Create" to start.

With EaseUS Todo Backup bootable USB or DVD, you'll no longer be afraid of having the "PC needs to be repaired. A required device isn't connected or can't be accessed." trouble.