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3 Posts

08-05-2017

Ireland

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G50 Window boot manager has been blocked by the current security policy"

2017-08-05, 12:26 PM

I've been trying to resolve this error for a number of days without success so your help would be much appreciated.

 

I've been getting the following error

 

"window boot manager has been blocked by the current security policy"

 

 

I tried the following:


Inside BIOS, under Boot Tab I have changed the Boot mode to Legacy and have changed Secure Boot to 'disabled'


That resolves the error message but now the laptop will not boot up - it just hangs on the Lenovo logo for hours

 

Please help

 

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5067 Posts

11-22-2011

United States of America

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Re: G50 Window boot manager has been blocked by the current security policy"

2017-08-05, 13:12 PM

Reference this post:

https://forums.lenovo.com/t5/Lenovo-B-and-G-Series-Notebooks/G50-80-Error-quot-window-boot-manager-has-been-blocked-by-the/td-p/3348294

 

In BIOS, change OS optimized defaults to other OS.

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3 Posts

08-05-2017

Ireland

7 Signins

41 Page Views

  • Posts: 3
  • Registered: ‎08-05-2017
  • Location: Ireland
  • Views: 41
  • Message 3 of 4

Re: G50 Window boot manager has been blocked by the current security policy"

2017-08-06, 7:29 AM
I have already tried the solutions suggested in that post and have changed the OS optimized defaults to 'other OS' in the BIOS.

As I said, since making these changes I no longer get the security policy error message however the laptop will still not boot up - it just hangs on the Lenovo logo for hours
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2400 Posts

11-07-2014

United States of America

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Re: G50 Window boot manager has been blocked by the current security policy"

2017-08-08, 15:36 PM
It sounds like either the Windows "Key" has been compromised or the information stored in the TPM chip has been compromised. You may need to re-install Windows from USB / DVD as a "Fresh Install" to resolve this issue.

Before installing, make sure to reset BIOS by removing power and battery, then press and hold the power button for 30 seconds to drain the onboard components.

Once completed, install battery and AC power, boot to BIOS, load defaults, save and exit.

Boot from USB / DVD media re-install windows fresh, should restore TPM and BIOS keys.

Good luck.

CB

I do not work for Lenovo, I only provide suggestions based on my personal willingness to help others. All advice and comments are based on my experience, and do not reflect Lenovo policy, terms or conditions.
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