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Shuryga
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Dell M4800 reboot issue

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Hello, I have dell m4800 with nvidia quadro 1000m. When i pluged monitor to hdmi out port laptop randomly rebooting or shuting down. Please help Smiley Happy 

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Shuryga
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Re: Dell M4800 reboot issue

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Update. Laptop is shuting down also when not pluged to hdmi... 20190513_130111_compress18.jpg

BIOS power log after shuting down 

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sfortin
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Re: Dell M4800 reboot issue

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If it were me, I think I would purchase another HDMI cable and try that. It's possible your cable is faulty, and has an electrical short. Of course, it could be the connector on the laptop, even the monitor.

Also, is your BIOS and graphics / video drivers up to date?

Shuryga
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Re: Dell M4800 reboot issue

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Thank you for answer. I Just tried now a hdmi cable from my xbox one, and another one with no success. I also change  termal paste. Temperatures are ok even on heavy load. 

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sfortin
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Re: Dell M4800 reboot issue

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OK, first, if you plug the HDMI cable into the laptop, but you do not plug the other end into the monitor, does the unit reboot?

Second, do you have a means to test your laptop with another monitor? (Computer store, friend's house, work?)

Shuryga
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Re: Dell M4800 reboot issue

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I have try two other screens with same result. When only hdmi is pluged nothing happened. I think it only rebooting when working on nvida quatro . When laptop operate on intel integrated graphic card seam to be ok...
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Shuryga
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Re: Dell M4800 reboot issue

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20190511_103542_compress70.jpg

BIOS power log after reboot 

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sfortin
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Re: Dell M4800 reboot issue

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OK you have done some good debugging. I would uninstall the driver and re-install the most recent driver. Your BIOS should be up to date as well.

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Shuryga
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Re: Dell M4800 reboot issue

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All Driver are up to datę including BIOS. New fresh Windows 10 is installed. 

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sfortin
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Re: Dell M4800 reboot issue

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Wow. So - at this point, I suppose I would try the display port connector on the side of the laptop. What type of inputs does your monitor support? If HDMI only, I would try a dP to HDMI adapter or cable. 

For example:

https://www.amazon.com/DisplayPort-Adapter-Converter-Gold-Plated-Compatible/dp/B017Q8ZVWK/ref=sr_1_6...

-or-

https://www.amazon.com/Displayport-Display-Converter-Gold-Plated-Compatible/dp/B073WZCHWQ/ref=sr_1_2...

Let me ask a few more questions: what type of power adapter are you using? Is it an OEM power adapter? Is it 180W? If it is not providing the proper output, or if it is somehow providing a grounded output at a different potential than the monitor, then connecting the two devices together may result in a reboot.

If you've only been testing the M4800 with it plugged into it's adapter, try disconnecting the power adapter and running on battery... then connect the laptop to the monitor. Does it reboot?

Shuryga
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Re: Dell M4800 reboot issue

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I have OEM power adapter 180w. When laptop running on battery results are the same. 

I Will buy dp cable and try Smiley Happy. Thx 

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