i have problem with download speed

[PewDieRekt]

im having little weird thing.. if i used the ethernet cable on my laptop and download something i get 2MBps/3MBps but if i plugged the LAN cable into my laptop download something i only get 100KBps/130KBps why?

Things i tried
____________________
Have you tried to restart the router?
Yep still nothing

Have you tried to turn the device wifi off?
Yep there is 3 phones turned off "Still nothing at all"

Have you tried to close all unwanted programs?
Yep still nothing also disabled all startup programs

Have you tried to scan some viruses?
100 Times still nothing

Have you tried to clean junks from your laptop?
Everyday. still nothing

Have you tried to close all auto update programs?
Java,uTorrent,steam <--- turned off i checked the programs before i post this even steam cant auto login to update games.

That's the things i tried, so i am online i can see the reply's thx!

 

[popatim]

Sounds like one of the cables is bad.

 

[PewDieRekt]

Sounds like one of the cables is bad.

is there ANYTHING! to boost the lan download speed? anything? + if i plugged the wan cable to my laptop i get 2MBps speed but idk keeps saying 'Network 4 internet access'
then 'network 7 internet access' and the tp link admin website cant be loaded... what can i do with this?
i cant even renew my ip address :/ if there is any solution to these problems let me know :/