My first suggestion is the Lenova IdeaPad G505s. It is 15.6 inches and runs Windows 8.1. It has a 2.50 GHz AMD processor and has a 1TB hard drive(1024 GB). It has a decent graphics card and has 6GB RAM, which means you will be able to multitask like nobody's business. It is able to run Minecraft on highest settings without any problems. It also has a sleek design that only ways 5 pounds. It has 3 USB ports as well as a VGA and HDMI. You can get all of this for 400-500 dollars.
Another good one is the Sony Vaio Fit Series. Besides being the sexiest laptop there's, it also has a terabyte hard drive. It also has 6GB RAM. It is only 14 inches and will be a little lighter. It is truly beautiful and will run Minecraft and edit videos EASY. It is coming around at 450 dollars but without power cord or AC adapter, which will make it another 50 bucks. So about 500 total.
Here are the links
1.http://www.ebay.com/itm/141332494617
2. http://www.ebay.com/...1338478638
P.S
Another good place to buy computers is Newegg.com