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Fix Windows 10 EFI 0xc000000f Boot Error

Repair Windows 10 UEFI boot error 0xc000000f

If you can boot into Advanced Startup Options menu jump to step 4

  1. Insert the Windows 10 ISO USB in your PC and restart
  2. Boot from the media
  3. Select Repair Your Computer
  4. Select Troubleshoot
  5. Select Advanced Options
  6. Select Command Prompt

Type following in Command window

Use Diskpart to assign drive letter to EFI system partion

diskpart
list disk (Note which disk is your boot drive,

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CA Useful Notes

Computer Active Useful Notes

www.snipca.com/nnnnn

nnnnn

49011 Glarysoft Malware Hunter Pro – Windows Defender companion – Malware scanner + speedup and cleanup tools
43969 Test Grab – Windows image test grabber
41655 Epson Ink Pad Reset Utility – go to Octoinkjet for replacement pads
40057 Wise Disk Cleaner free specialist W10 disk cleaning tool
40094 Macrium Reflect 8 Free – Windows Image backup software
39995 Remove Empty Directories – GUI
39946 Duplicate Photo Finder –

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JIAYU S3 MT6752 H560 Oreo Installation Steps

  • Backup everything first – IMPORTANT!!!
    • Backup Apps, Settings, Contacts, Calendar, e.g. Settings => System => Backup => Backup Now
    • If older version of Android backup SMS and Call History to Google Drive by installing Synchtech “SMS Backup & Restore” app from Google Play.
    • Backup Photos (not synchronised to Google Drive)
      • Boot into Recovery (TWRP) to get full access to phone
      • Connect a usb phone cable to your PC
      • Using Windows Explorer or similar to copy Internal Storage/DCIM to PC Desktop\DCIM
    • Nougat users –

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Extend XP Windows Updates until 2019

Extend XP Windows Updates until 2019 by cutting and pasting the following script into Notepad; saving it as “wepos.reg” and then running it from the Admin Command prompt. This will add the PosReady key to the registry to enable your system to receive security fixes and updates designed for Windows XP Embedded for Point of Service (WEPOS) systems.

After applying the registry patch log out or restart and run “Windows Updates” to get your system up to date. It might take a while and suffice to say where “Windows Updates”

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How to Remove Browser Redirect and Viruses

To remove any browser redirect, follow these steps:

  1. Scan with Kaspersky TDSSkiller to remove Rootkits
  2. Use Rkill to stop running malicious processes in order to run following AV software
  3. Scan and clean your computer with Malwarebytes Anti-Malware
  4. Scan and clean your computer with ADWCleaner
  5. Double-check for malicious programs with HitmanPro – Optional
  6. Use Zemana AntiMalware Portable to remove browser redirect
  7. Reset your browser to default settings

Once complete uninstall all the AV programs and continue with your trusted AV program,

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Windows 10 Recovery Notes

Carry out the following steps to fix Windows 10 boot error, e.g.  BSOD 0c000007b error:

  • Boot Windows 10 ISO USB
  • Click ‘Next’ on main screen after selecting appropriate language options
  • Select ‘Repair Computer’
  • Select ‘Troubleshoot’ > ‘Advance Options’
  • Select Command Prompt and run following commands – note SFC and DISM can take some time to complete
    • CHKDSK D:/f
    • MKDIR D:\Scratch
    • DISM /Image:D:\ /Cleanup-Image /RestoreHealth /ScratchDir:D:\Scratch
    • SFC /Scannow /OffBootDir=D:\ /OffWinDir=D:\Windows
  • Exit Command window back to Menu
  • Select ‘Troubleshoot’

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Mount EFI Partition from Linux

This blog (http://www.pjc.me.uk/efi-gpt/) is the only one that gets to anywhere close to answering this question. However you need to substitute “auto” instead of “fat32” in the mount command to get it to work. “xfs” and “fat32” threw out errors – actually the mount command after mounting shows it was “vfat”!

Here’s how I mounted the EFI partition on my external 500GB drive:

sudo parted -l print
Model: ATA ST3500630AS (scsi)
Disk /dev/sdb: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name                  Flags
1      1049kB  135MB   134MB                                          bios_grub
2      135MB   345MB   210MB   fat32                                  boot
3      345MB   479MB   134MB   fat32                                  msftres
4      479MB   54.2GB  53.7GB  ntfs                                   msftdata
5      54.2GB  108GB   53.7GB  ntfs                                   msftdata
6      108GB   162GB   53.7GB  ntfs                                   msftdata
7      162GB   172GB   10.7GB  ext4
8      172GB   184GB   11.8GB  ext4
9      184GB   185GB   1074MB  linux-swap(v1)
10      185GB   228GB   42.8GB  hfs+            Apple_HFS_Untitled_2
11      228GB   282GB   53.6GB  hfs+            Apple_HFS_Untitled_3
12      282GB   335GB   53.6GB  hfs+            Apple_HFS_Untitled_4
13      335GB   389GB   53.6GB  hfs+            Apple_HFS_Untitled_5
14      389GB   488GB   99.2GB  hfs+            Apple_HFS_Untitled_6
15      488GB   489GB   650MB   hfs+            Recovery HD
16      489GB   500GB   10.9GB  hfs+            Apple_HFS_Untitled_2

sudo mount -t auto /dev/sdb2 /mnt/test

cd /mnt/test/
ls
boot  EFI

Use kdesudo Dolphin (as Root) to view and edit files on the EFI partition

Note use of Parted (supports GPT drives) to get the partition number

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Windows 10 Free Upgrade

For Windows 7 and Windows 8.1 users only

Windows 10 free upgrade for customers who use assistive technologies
Click on “UPGRADE NOW” button to start.

Alternative method using Media Creation Tool

Download Windows 10 Media Creation Tool
Click on “Download tool now” button. Open downloaded Setup file and click Yes, Accept, choose “Upgrade the PC now”, then click Next.

Note: you may be asked to enter your Windows 7 or 8.1 product key.

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Windows Reset Network Adapter

When having problems connecting to the LAN or Internet the following terminal commands may clear the problem.

Reset IP stack; Winsock catalog and firewall

netsh int ip4 reset
netsh int ip6 reset
netsh winsock reset
netsh advfirewall reset # beware resets rules to default

Restart computer to effect changes

Renew IP address

ipconfig /release
ipconfig /flushdns
ipconfig /renew

If losing network after sleep check adapter settings under “Power Management” to ensure the interface is not powered down to save energy.

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