Q: My computer works just fine except for the Internet. All other devices in my home work just fine with the same internet

AS stated, my computers speed is quite normal with everything but the internet. I'm sure it's not an issue with the Internet/router/etc because the rest of the computers and mobile devices work normally with it at a good speed. My guess is it's the computer then, but I have no idea where to start. I already ran a virus scan just in case, showed no problems. Ideas? Suggestions? Anything?

thanks