Windows 10: Why does my laptop run slower when it's NOT connected to my external monitor?

I feel stupid. I'm starting to think because it's so used to running with the monitor hooked up that it's now slow running without it.

Logically speaking now: Could it be since my laptop's screen is 4k and the monitor is a standard 1920x1080? I do not know the refresh rate of the external monitor but my laptop is 59Hz.

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:)

 

Surface Laptop 3 with external monitor

Hi All,

Has anyone come across an issue with an external monitor blacking out while connected to a Surface Laptop 3? I have the laptop connected to a widescreen laptop with the Surface Dock. Both work fine however, once every hour or so the external monitor blacks out and comes back.

I've completed the following:

• Updated laptop drivers and firmware
  • Updated monitor drivers
  • Swapped out monitor

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connection problems External Monitor for laptop

If you're trying to use a wired external monitor is it connected to the laptop's HDMI output connector or the mini DisplayPort connector?

If you're using a wired external monitor and don't see any output, right-click on an empty spot on the Desktop and select Screen Resolution -> Detect

In addition, you may need to press the F7 key and select the mode in which the display will function. There are 4 modes:

• Disconnect (or Computer only): display only on the laptop's screen
• Duplicate: the same display on the laptop's screen and the external monitor
• Extend: extends the output so that you can drag things from one screen to the other
• Projector only (or Second Screen Only): displays only on the external monitor

Or are you trying to use wireless (Wi-Di or Miracast)?

 

Laptop External Monitor Problem


Thank you once again, I will explain:

• Today 10th November 2016 - After monitor eventually successfully connects to my HP laptop, in my absence when the laptop/monitor powers off, I get NO re-connection problems during the day
• Tomorrow 11th November 2016 - After laptop and monitor has been restarted following, shut-down, power offs(laptop + monitor) I will be stuck once again with exactly the same problem

In my display settings each morning, my HP laptop shows it is connected to my external monitor, however there is no display on the external monitor for a vast amount of time, just randomly suddenly appears.?