Windows 8.1 upgrade process and possible Secure Boot isn't Configured Correctly" error after Windows 8.1 upgrade

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Windows 8.1 Update from Windows Store – Important Steps

Before Downloading the Windows Update from Windows Store – Important Steps

1. Please have or create a Microsoft email account so the process goes through without any issues.
2. Please ensure all third party anti virus, spyware / malware applications are uninstalled.
3. Update your Basic Input/Output System (BIOS) to the latest available on Dell Support
4. Update your Intel / nVidia / AMD video drivers to latest available from Dell Support or the AMD / nVidia website.
5. XPS 8500 systems will have Secure Boot and Load Legacy option ROM Disabled after the Window 8.1 update – this is due to Windows 7 Certified Video Cards. Window 8 Certified video cards or Unified Memory Architecture (UMA) configurations do not exhibit this problem.
6. Disable acceleration for mSATA configurations in case you run into a No boot situation while performing Window 8.1 update or other errors related to the update.

After Downloading the Windows Update from Windows Store ~ 3.6 GB Screens and Steps Customer should follow

Secure Boot isn't configured correctly watermark notification.

Windows 8 users who upgraded to Windows 8.1 have been reporting a watermark notification when booting into Windows. "SecureBoot isn't configured correctly." (See Figure 1.)

Figure 1.

Solutions: Try these solutions for the watermark notification, in order.

1. The first thing to check is to see if SecureBoot has been turned off in the BIOS, if so, re-enabling it should resolve the issue.
2. After installation of Windows 8.1, run all Windows updates. There are approximately 10 additional updates that will install, after the 8.1 upgrade. This process takes about 15 minutes and requires the user to keep the system connected to the Internet after the upgrade to let the additional updates install.
3. Microsoft has released a hotfix to remove the watermark notification after 8.1 upgrade. KB 2902864 Update removes the "Windows 8.1 SecureBoot isn't configured correctly" watermark in Windows 8.1 and Windows Server 2012 R2

4. For systems where SecureBoot and Load Legacy Option ROM are grayed out, A bios update is required after the update. In this case, go to Dell Support, and download the latest BIOS update for you Dell model.
5. For Windows 8 Professional Edition systems exhibiting this notification after installing the Windows 8.1 upgrade "SecureBoot isn't configured correctly", follow the steps indicated below, based on your input method, to resolve the issue:

Touch screen instructions:

1. Swipe the charms bar
2. Touch search
3. Type in gpedit.msc
4. Touch gpedit
5. Then under Computer Configuration
6. Touch Administrative templates
7. Then All settings on the right window pane
8. Then scroll down to use enhanced boot configuration data validation profile
9. Touch enabled option and touch apply option
10. Exit and Restart

The notification should be gone.

or

Keyboard instructions:

1. Press (Windows Key + C) to open the charms bar
2. Click in the searchbox.
3. Type in gpedit.msc
4. Click the gpedittile (this will open the computer management window)
5. Then under Computer Configuration
6. Click Administrative templates
7. Then double-click All settings on the right window pane
8. Then scroll down to use enhanced boot configuration data validation profile
9. Click enabled option and Click the apply option
10. Exit and Restart

The notification should be gone.

System specific steps by model.

6. All New Shipping systems with Haswell Processor and Lynx Point Chipset (Inspiron 7000 series, XPS 8700, XPS 2720, XPS 13 MLK, XPS 13 MLK ULT, XPS 12 DUO ULT, AW new Releases) Steps
   1. Customer can go into the Bios (Press F2 at boot to enter System Setup)
   2. Go into the Boot Tab
   3. Secure Boot to Enabled
   4. Secure Boot Mode to Standard
   5. Save Settings and Reboot
   6. Once you are on the Windows Tiles, Choose Desktop and check if the Watermark is still visible
   7. If not visible, reboot once again for good measure
   8. If the Watermark is still visible go to next steps

If Secure Boot is Enabled and the watermark still appears (For all other systems that are Windows 8 Certified) Please ensure Load Legacy option Rom is disabled , If Load Legacy Option Rom is enabled, secure boot disabled will be grayed out.

7. Image for Inspiron 3521, 5521, 5721, 5537, 5737, 3721, 3537, 3737, 5437, 5520, 7520, Inspiron 3420, Inspiron 3520, XPS L521X, XPS L421X Steps
   1. Boot into Bios (F2)
   2. Then select the Boot Tab
   3. Secure boot to Enabled
   4. Secure Boot Mode to Custom
   5. Click on Restore Factory Defaults (This will reset the Secure boot Keys to Factory Default)
   6. Change Secure Boot Mode back to Standard
   7. Save Settings and Reboot
   8. Once you are on the Windows Tiles, Choose Desktop and check if the Watermark is still visible
   9. If not visible, reboot once again for good measure
8. For Inspiron 5423 / 5523
   1. Boot into Bios (F2)
   2. Then select the Boot Tab
   3. Secure boot to Enabled
   4. Move over to Security Tab
   5. Secure Boot Mode to Custom
   6. Click Key Management
   7. On Key Management Screen
   8. Change Default Key Provisioning to Disabled
   9. Now Install Default Secure Boot Keys will be highlighted – Click that
   10. On the Load Default Secure Variables popup , choose yes
   11. Press ESC key
   12. Change Secure Boot Mode back to Standard
   13. Save Settings and Reboot
   14. Once you are on the Windows Tiles, Choose Desktop and check if the Watermark is still visible
   15. If not visible, reboot once again for good measure
9. For XPS 13 / XPS 13 MLK / XPS DUO 9Q23 / 9Q33 / Inspiron 7720
   1. Boot into Bios (F2)
   2. Then select the Boot Tab
   3. Secure boot to Enabled
   4. Move over to Security Tab
   5. Click Secure Boot Configuration
   6. Click Enter next to Reset to Manufacturing Default
   7. On the Load Default Secure Variables popup , choose yes
   8. Press ESC key
   9. Save Settings and Reboot
   10. Once you are on the Windows Tiles, Choose Desktop and check if the Watermark is still visible
   11. If not visible, reboot once again for good measure
10. For XPS 8500, XPS 8700, XPS 2720, XPS 2710, Inspiron 2330, Inspiron 2350
    1. Boot into Bios (F2)
    2. Then select the Boot Tab
    3. Secure boot to Enabled
    4. Secure Boot Mode to Custom
    5. Move Secure Boot Mode to Standard
    6. You Should see a popup mentioning that moving secure boot from custom to standard would force Bios Default keys to be used
    7. Click Yes
    8. Save Settings and Reboot
    9. Once you are on the Windows Tiles, Choose Desktop and check if the Watermark is still visible
    10. If not visible, reboot once again for good measure
11. Enable SecureBoot on Dell Venue 8 Pro
    1. Power on the system while also pressing the Volume Down key to enter BIOS setup screen
    2. Select the Boot tab
    3. Select SecureBoot
    4. Change from Disabled to Enabled
    5. Select exit and choose the option Save Changes and Reset, Choose yes to exit.

The SecureBoot alert in the lower right of the screen should no longer be displayed.