Not able to connect to wireless stick on my PC

I cannot connect through my web browser either when im directly connected by the hot spot of the wireless stick nor when it is connected to my home wifi in my PC. I am able to do both iways n my mac but not in my PC so I know the steps for connecting. I have tried all browsers in my PC but it wont work. I run windows 8.1. I have disabled the antivirus but to no avail. When i bought the stick it did connect both ways once or twice. But after about a month its a no show. Since my mac and my mobile devices are able to connect that I am sure my wireless stick is OK. I dont know what is wrong with my PC? Any Help???