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ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
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09-01-2014

India

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  • Message 11 of 13

Re: T400 screen blinks when AC power is connected or disconnected

2014-09-01, 9:37 AM

Thanks a lot. Your suggestion worked. Great!

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01-13-2008

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  • Message 12 of 13

Re: T400 screen blinks when AC power is connected or disconnected

2014-09-01, 9:40 AM

The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

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10-12-2020

AR

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  • Message 13 of 13

Re:T400 screen blinks when AC power is connected or disconnected

2020-10-12, 14:24 PM

The problem is actually HDR in windows. It turns off automatically when on battery. Thus the flicker. 
Just go to screen configuration and you'll see a toggle USE HDR. just turn it off while connected to a power outlet. 

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