Complete meltdown after factory reset

I have an Acer aspire Windows 7 x64 that was giving me issues so I did a factory reset on it. I've done this before with no problems on this very computer, but during this last time everything seemed to have gone horribly wrong. Everything is running extremely slow and when trying to use an Internet browser it freezes before loading every page but usually load eventually even if it says that it's not responding. Other things won't load and I have no idea what the problem is. When I go on to Firefox which is my primary browser, I get an error saying that the script cannot be read. The error reads as such:

Chrome://saff/content/saffplg.js.524

I don't know what other information I can give you, this was just such a great computer before and I would really appreciate it if someone can help me get it back in order. Thank you!