1.    17 May 2017 #1
    Join Date : Jul 2015
    Posts : 9
    Windows 10

    0xc000000f a required device is not connected

    Hey Everyone,

    Unfortunately I do have to start by saying I am unable to provide the stuff from logs and everything, as I can't even boot up at the moment. I'm attempting to use my original Windows 7 installation disk to downgrade from 10 to 7 where this computer started at. I was doing this to do a fully clean install before giving the computer to a family member.

    The first attempt, I had no problems whatsoever booting up. I was able to tell the laptop to boot from cd/dvd and get the installation media to come up. I went through to custom install to fully wipe the hdd and reinstall 7, but then it immediately failed. Since that, I have not been able to boot the computer in any way. I can't boot through USB, cd/dvd, HDD, anything. I can't get it to boot to safe mode in any way so I can't get to cmd to run any commands. Any help on this issue? Is there a way I can easily wipe the HDD completely and then try to boot from the disk without ruining the HDD itself or bricking the computer?

    Any help is appreciated.

    The attached image is the screen I'm seeing, except I don't have the F9 option as it is a single boot system. Hitting enter or F8 just brings the same screen back up.

    The computer is a Dell Inspiron N5040 laptop. The HDD was replaced a few years ago due to an older one failing.

      My ComputerSystem Spec
  2.    20 May 2017 #2
    Join Date : Nov 2015
    Posts : 2,867
    64bit Win 10 Pro ver 1709 Build 16299.64

    If you are intending to wipe everything off your laptop I would recommend downloading (using another PC) a W10 installation USB driver or disk from the MS Media Creation tool and doing a clean install. Make sure you select the version of W10 to exactly match the one you had installed before.

    Clean Install Windows 10
      My ComputersSystem Spec


Similar Threads
Thread Forum
USB Drive (Media Player) failing to show up as connected device
I'm having just about the strangest USB issue I've ever encountered. And its driving me up the wall. 134695 In the above picture I've plugged in a normal usb drive on my desktop and it shows up perfectly fine under my PC, under the device...
Drivers and Hardware
Solved "Required device isn't connected/can't be accessed" after SSD replace
Today, I got a 1TB Samsung 850 EVO SSD. Intending to replace my hard drive, I connected it with an optical drive adapter caddy and cloned my current HDD (500 GB, 202 GB used) with Easeus Todo Backup Free. I used Partition Master to create an NTFS...
Drivers and Hardware
Wifi turns off automatically when a device is connected to my hotspot
Whenever a device is connected to my hotspot the wifi is turning off automatically thereby stopping the hotspot. To turn the Windows 10 hotspot on, in first step I have turned on the Wireless Network Connection as shown in the below image. ...
Network and Sharing
Can't remove password required to unlock device
Every single time i unlock my device, i have to input either my PIN or my Password. I have gone into "All Settings", "Accounts", "Sign-in Options", and set "Require Sign-In" to "never". I have also gone into Control Panel, Hardware and Sound,...
User Accounts and Family Safety
Connected USB cable - no action ,not visible in device manager
Hi, I got a problem with USB cable. When I plug it in there is no action from system side. It should at least give me a message like"Unknown Device" but there is NO such message. I don't see it also in device manager... I've checked same cable...
Drivers and Hardware
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 10:07.
Find Us
Twitter Facebook Google+ Ten Forums iOS App Ten Forums Android App

Windows 10 Forums