HP Pavilion dv6z-7000 CTO

I just can't wrap my head around this one.

My brother is playing League of Legends, has 99 ping. I plug in my laptop, his ping immediately spikes to 1k then eventually hovers between 200-300ms.

At the same time, my download speed drops from 1.50 MBps to 40KBps.

Everything goes back to normal after I unplug it.

  • 1
    "plug in" … to what? If you mean to the mains power, then this becomes a bizarre coincidence - superuser.com/questions/1484255/… - or perhaps something Windows just did in a recent update.
    – Tetsujin
    Sep 19, 2019 at 15:51
  • To laptop charger -_- Sep 19, 2019 at 15:52
  • 2
    Both computers are wireless I presume. Is the charger you’re using the original charger that came with the laptop new? This sounds like wireless interference. This is something a Chinese knock off power adapter might do. Sep 19, 2019 at 16:24
  • 1
    Maybe your laptop charger causes electromagnetic radiation that disturbs your wireless? Because it is a cheap, unshielded clone? Then I'd also be afraid that it may not even be safe to use... Sep 19, 2019 at 17:32
  • 2
    @Tim_Stewart Us old amateur radio folks know that intermediate frequencies can also cause problems, as well as other frequencies not directly sitting in 2.4 GHz or 5 GHz bands.
    – K7AAY
    Sep 19, 2019 at 21:28

4 Answers 4


Try creating a custom power plan, go for all performance while plugged in.

In device manager, under your wireless card check to see if you have power management options. If you do turn them off. Check to see if you can replicate the problem.

This is probably caused by the non-oem charger. If it's voltage/amperage are not up to spec for the design of the computer, it could be confusing the power management drivers.

If either of these work to stop this issue, get a oem charger for the laptop.


If it is signal interference look for the signal to noise ratio under the wireless settings. If the number of decibels changes when it's plugged in interference is the likely culprit.


this is a power problem. The charger cannot supply the watts necessary to run the motherboard/CPU at full speed so it drops to lowest possible speed. The laptop probably charges the battery really really slowly as well. You need a new charger. And you can also change the setting in BIOS to alert you to a low functioning charger. But you will need a new power brick/cable.


Open a support ticket with HP. This is an issue with certain versions of Windows but the only way to put pressure on Microsoft is through a well respected partner, like HP. Plus, it looks like a hardware issue so HP will be motivated to blame Microsoft. The more tickets they receive about this issue the faster it will get resolved.


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