I have ethernet in my PC and recently got a new cable for it I’m not sure what else to do to fix it any help would be appreciated
Try to connect the laptop to ethernet with the same cable that the PC gets a slow connection with. If the laptop still gets a fast connection, it means the cable is not the cause.
Are you using the ethernet port on your PC’s motherboard, or a separate network card’s ethernet port? How fast is that network connection? If the motherboard is old and/or cheap, its network adapter might be slow and you could try to buy a network card. Those are very cheap so you might want to troubleshoot by buying one just in case anyway.
Lastly, could the PC be so slow that it would struggle to run a fast internet connection? A slow CPU and slow hard drive can both limit the maximum download speed.
A while ago I had the same issue with a new Dell machine. Turned out that I had some bloatware tool installed called ‘Intel Killer Performance suite’ which limited my bandwidth. I removed this tool and problem was solved.
Could be that you have an older internet chip that only don’t support up to 1Gbit speed
Was it the same with a different cable? Did you try othe ethernet ports in the router/PC? Check the router settings if there aren’t any limits setup there.
Run the same speedtest.
Google speed test will count only connection to your device, why other speedtest mostly test the speed to your bandwidth, not device
- Check if the issue persists when connecting the cable to another device? I’m sure you are using a wireless connection on your Laptop, does it have an ethernet port? If so turn of the WIFI on your laptop and connect the ethernet cable from your pc to the laptop and test the speed then.
If the issue persists on other devices with the same ethernet cable:
The issue is likely related to something slowing down the connection somewhere. Have you tried different ethernet ports on your router, is the cable directly connected to your router and what speeds do the router ports support? Do you have a cable running through the wall that is connected to a UTP connection box on the wall to which you connect, the cable that is running through the walls might be causing issues and you may have to run an new cable from the router/access point to the UTP connection box. (ethernet connection coming from the wall).
Are you using some form of a wireless/remote access point or extension to connect the cable to? This may be limiting your connection speed drastically. Does the issue persist if you skip all that and move the pc for a bit for testing to your router/access point and connect the cable directly?
Basically your new cable might not help if it is not directly connected to your router or if it’s connected to a router port that does not support the required speed. If there is a limiting device/cable somewhere in-between of that connection then putting a faster cable in the final part of the connection does not help you fix your issue. The cable in your wall for example may be damaged and therefore limiting your connection speed severely.
If the issue does not persist on other devices with the same ethernet cable:
Check to see if the cable is connected to proper ethernet port on your PC and update your motherboard/chipset and/or network ethernet port drivers. These can be found on the manufacturers website for motherboard check your motherboard brand and manufacturer and then go to the support/downloads page on the product page of this motherboard model, same goes for network card. If that does not help your ethernet port may be damaged or misconfigured. Try a clean install of the network drivers and if that does not help try to buy a Network adapter and install that on your motherboard and install the appropriate drivers and retry, this should fix your issue in that case. Many of these network cards also come with wireless connection possibilities/antennas if you are interested in that.
If all else fails a clean install of the operating system and then all the required drivers might help to fix any configuration and/or programs that may be causing issues that might be related to your case. Don’t forget to make a backup of your important files before you do a clean reinstall of your operating system, hell don’t forget to make regular or even automated backups of all your important files to begin with it’s the best habit.
Good luck.
New cable… but what Category? (it should be printed all along the side of the cable)
This speed is suspiciously close to the maximum speed of Cat4 (16Mbps). You need at least Cat5e (1Gbps) but preferably Cat6 (10Gbps) to be future proof.
I dream for 17gb stable internet
Not me with 75 down and 20 up 
In all seriousness any suggestion I may have provided has been posted in here already.
Try this test again not using chrome
Make sure you do not have some sort of QoS software that limits bandwidth for generic operations and reserves another part of it for specific (gaming) operations.
OP -gets 30 ish megabits on a slow connection-
Me, who loves in the rural south and can only get T-Mobile home internet:
“Holy hell, I’m actually getting three whole megabits! I can download a game for switch in 18 hours now! So fast!”
Try reconnect ethernet wire
Unplug and replug till you see green instead of orange blinking light beside ethernet port
Maybe check if ur using the ethernet port 2 in your router, in some routers like mine, only select ports have gigabit capabilities. And also, log in to your router settings page and check if u have anything limiting the speeds of LAN port. like it could be limiting the speeds of the LAN port so it could be very slow for you.
Where does that cable go? Directly to the router? If not, check if the connection improves if you connect directly. If you use things like powerline (ethernet over the electrical sockets), the bandwidth could be reduced by that. Or whatever ethernet wall outlet you use could be damaged.
probably a bad cable. had this happen once. the internet was there, just abysmally slow. replaced the cable and problem was solved. kinda weird. you would expect it to either have connection or not have connection, but I guess bad connection was also an option 
Plug the cable in the laptop and see if it’s the same issue (make sure to turn off wifi on laptop before test)
Click the Start menu and type “cmd.” Right-click on the Command Prompt option and choose Run as Administrator. In the Command Prompt window that appears, type the following command:
ipconfig /flushdns
update your network adapter drivers, see if that helps