Lexra Pixnet

1. Go to Start menu and type cmd.exe in the Search Bar and press Enter. (Remember you must be logged on as Administrator - if you're not, logout from your current user and login as Administrator. Or right-click the "Command Prompt" link in the start menu / accessories and select "Run as Administrator")
Now type the following and press Enter:

bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING ON


If it doesn't work for whatever reason you can just remove loadoptions with bcedit and switch testsigning off.

bcdedit /deletevalue loadoptions
bcdedit -set TESTSIGNING OFF

2. Go to Start -> Run -> GPEdit.msc
Now go to User Configuration -> Administrative Templates -> System -> Driver Installation -> Code signing for drivers
Click on "Disabled", then on "OK".

3. If this is inaccessible then change it via Registry:

Go to Start -> Run -> regedit.exe
Look for: [HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows NT\Driver Signing]
Change the BehaviorOnFailedVerify key value to "0".

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bootrec /fixmbr
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bootrec /fixboot
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chkdsk /r
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sfc /scannow
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