Wifi become slow for only one PC

C

Chu Gor

Hello

(PS: I am not good in English, sorry if I cannot describe things properly)


I have a PC with Window 10, previously it was OK with the network speed.

Suddenly, my PC's wifi become slower a lot.

I cannot found out the reason of it.

I tried a lots of test, to find the reason.

All of other devices connected to the wifi is OK with the network speed. (include my phone, my Macbook, my family's devices)

Then, I tried to connect different devices to different wifi to test their speed by Speedtest by Ookla - The Global Broadband Speed Test, here is the result:

(PS: normally, i use "Home wifi 5Ghz" for my PC, it suppose is the fastest before)

Home wifi 2.4 GhzHome wifi 5GhzPhone hotspot wifi 2.4Ghz
PC (with problem)around 18-30 mbpsaround 3-6 mbpsaround 26-27 mbps
Macbookaround 66-80 mbpsaround 90 mbpsaround 31-38 mbps

It is very strange!

Even if the PC connected with phone hotspot is even faster than connect to the home wifi.

And the speed of both devices connected to phone hotspot is very close.

(I don't know is it normal or not)


So, what is happening to my PC? How can I solve this problem?

Thank you so much!


(by the way, one small things I want to mention. MThe day my PC start get slower, my father force turn off all electricity in my house. I am not sure it is related, just to mention.............)

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