My Internet became really slow all of a sudden?

I'm a gamer on Steam, so I have to update my games sometimes. Usually, I get about 300-400 kilobytes per second download speed. The other day, for no reason, my speed dropped to 20-30 kbps. I can't get it above that speed. I could hardly play a Minecraft server without sinking through the ground or disconnecting. I live in central Ohio, and I use Windstream Communications as my ISP. I have a 673 GB memory on my computer. I have an Asus Notebook, 6 GB of RAM. As I said, previous download speed was 300-400 KB upstream. I could provide additional computer/ISP information if needed.

Check ibternet speed, using www.speedtest.net. If it's ISP problem call them to fix.

It sounds like you ran out of downloads. You have to wait until you get your downloads back