This is the third Amazon refurbished computer I've gone through. First one had wifi problems. Second one locked up in the middle of set up. Had to return both. This is number three. Wifi would start then disconnect after about a minute. Tried all the troubleshooting, update driver, nothing helped. I was under the impression from the ads that these computers had built in wifi. Wrong. They call it wifi because they include a very cheap USB wifi adapter. (When I say cheap I used to buy these from China on eBay for about a buck each). I finally found a driver online and got it working. Sort of. It was incredibly slow (about 9 Mbps) and fried after about 2 days. I had to get a better USB adaptor, now my internet is fine. Oh, and the advertised bluetooth 4.0? It doesn't have bluetooth at all. That's another expense I'll have to incur. Their idea of tech support is telling me I have free returns. Getting tired of sending these back. I'll have to keep this one and make the best of it. I've lost all faith in Amazon refurbished computers.