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

Jean updated on Apr 02, 2019 to Backup Utility | How-to Articles

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.

EaseUS Todo Backup supports boot disk types of a USB drive, CD/DVD disc, and an ISO file.

  • EaseUS Todo Backup emergency disk lets you restore your computer from one backup when Windows becomes unable to boot normally, with which you can restore operating system and files without booting into Windows.

Step 1. Prepare an empty USB or CD/DVD drive. (Remember to empty or clear your USB or CD drive. If you saved data on it, move them to another safe location.)

Step 2. Connect USB/CD/DVD to your Windows PC.

Step 3. Run EaseUS Todo Backup and click "Create Emergency Disk" in "Tools" on the left pane.

Select to create emergency disk.

Step 4. Choose "USB" or "CD/DVD" as the disk location for creating to WinPE disk so as to boot up the computer when the Operating System fails to boot or computer dies.
Step 5. Click "Proceed" to start creating the WinPE disk to your USB or CD now.

Create WinPE disk to USB/CD.

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.

 
 

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Frequently Asked Questions

Why choose EaseUS Todo Backup?

"The easiest way to protect your data and system files."techradar

"EaseUS Todo Backup Free is one of the most popular free data backup applications available. This software offers a myriad of features and is extremely user-friendly. It provides a full system backup, meaning you can back up your entire operating system."TopTenReviews

"EaseUS ToDo Backup Home is a great backup program, well suited to the home and SMB space."PCWorld

What is the difference between Clone and Backup? In what cases should I use Clone?

Clone will copy one disk to another or one partition to another (unallocated space is also supported). Usually, this option is used to upgrade the current disk by creating an identical copy. Backup will generate a .PBD image file containing the selected files or system that can be restored from the .PBD image if needed.

What is the difference between System Backup and Disk Backup?

System Backup will auto-select the system boot related partition(s) as the backup source to make sure the system image can be restored properly. Disk/Partition Backup will allow you to manually select a whole disk or speficy a certain partition as the backup source. You will get the same backup result as System Backup if you manually select the system and boot partitions with the Disk/Partition Backup option.

As a computer newbie, what features should I use to protect my computer?

You can use System Backup to back up the system and boot partitions, use Disk/Partition backup to back up the data partition and add plans to run an automatic backup. If you use the computer frequently or have software that may cause boot failure of the computer, we would suggest you back up the computer every 1 to 2 days. For other situations, you can backup the computer once a week. In addition, you can schedule File Backup to back up the files which are changed frequently.

What kind of storage service should I use to save my backup images?

EaseUS Todo Backup can save backup images to internal disks, external disks, network drives, or free cloud(Google Drive, Dropbox, and OneDrive) and CD/DVD. It is suggested to save the images to the internal/external/network drives to save time as those kinds of disks have a better read-write speed. It is suggested NOT to save the image on the source disk, because once the disk is damaged, all the files on the disk will become unavailable and you will be unable to restore the image.

As a company network administrator, what features should I use to protect our internal computers?

It is recommended that you use the SQL Backup feature to back up your company's SQL server and Exchange Backup feature to back up the Exchange server. In addition, you can execute System Backup to back up the system and boot partitions on every computer and set a plan to execute the backup once a day or twice a week to ensure that the computer can be restored timely when it has boot issues. File Backup feature can be used to back up important user data. If there are a large quantity of computers, you can purchase EaseUS Backup Center to manage the backups on the client computers centrally.

About EaseUS Todo Backup

Be it a file, system, partition, or disk, EaseUS Todo Backup will help you back up or clone the item and provide you with multiple backup plans.