I did a computer reformat after my computer said i had a trojan, now my internet isn't working right?

Scooby is right. AVG runs heavy. It is one sorry AV. Get rid of it while you are ahead. AVG runs way more heavy than Kaspersky does. Kaspersky will also protect your computer better. AVG will let trojan Mal ware on your machine. Most times not even detecting it till it's to late. Then it will not remove it. AVG's removal rating is right at 60 %. You just can't get much worse. AVG will lie to you. Tell you everything is fine. When in reality you are infested with Malware it can't detect or remove.