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freddellmeister
HDMI
Posts: 132
Registered: ‎12-24-2011
Location: AE
Views: 141
Message 1 of 3

P50: No Lenovo W10 boot logo with CSM disabled

I have the same phenomen on two different P50.

Disable CSM in BIOS and Windows 10 boots with an underscore (instead of a Lenovo logo?) togtether with the spinning dots.

Enable CSM and Windows boots with its normal Blue 4 piece Window logo.

 

If I disable CSM should I have a Lenovo logo during boot such I see on my E570?

Have anyone got a proper boot Logo with P50 with Secure Boot or CSM disabled?

Community SeniorMod
Community SeniorMod
Posts: 8,990
Registered: ‎01-01-2010
Location: US
Views: 110
Message 2 of 3

Re: P50: No Lenovo W10 boot logo with CSM disabled

You either need CSM or not depending on how the machine was configured when windows was installed.  If the BIOS was set to BOTH - Legacy first, you will get a legacy setup.  If the BIOS was set to BOTH - UEFI first, you will get a UEFI setup, assuming the recovery image is on a UEFI formatted device.  If windows is installed with secure boot on, you will get a UEFI image.  If I want to ensure a UEFI image but want to allow legacy boots later (from USB stick, etc.) I turn on secure boot before the install.  After setup, I change the BIOS to Both/UEFI First.


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
freddellmeister
HDMI
Posts: 132
Registered: ‎12-24-2011
Location: AE
Views: 103
Message 3 of 3

Re: P50: No Lenovo W10 boot logo with CSM disabled

Machine 1: Installed with UEFI only.

If I disable CSM support in BIOS (UEFI Only) I get no Windows boot Logo. (see attached pic)

If I enable CSM Support, I get Windows logo.

 

Machine 2: Installed with SecureBoot. Not option to enable CSM, no logo.

 

IS there any way to get Lenovo or Windows UEFI Logo?47376684_2144538535874302_1881828118172270592_n.jpgCSM Disable, UEFI Only47296416_2085666074787979_1421465962581852160_n.jpgCSM Enable, UEFI Only

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