I recently did what you are about to do, so here are your answers. You can transfer your Windows and files by cloning your hard drive to your SSD. This makes an almost exact copy of your hard drive, so that you don't have to reinstall anything. Some games might need reinstalling afterwards. This requires that you get the size of the files that you have on your hard drive below the size of your SSD. The easiest way to do this is to transfer any files that are non-essential, videos, pictures, documents, games you are not playing, etc., to another hard drive. The size of the essential files lets you know how big your SSD has to be. It is best to have at least 75 GB more space on the SSD than the amount of files you have left on the hard drive. My Samsung Evo came with the cloning software and everything went smoothly. I didn't even bolt the SSD to the drive cage, the SSD is so small and light that the cables that I attached it to held it "securely (relatively)" in place, I just slipped it in the small space between my hard drive and the top of the drive cage. I don't move my computer much. The hard drive has to be disconnected because it has a copy of Windows on it and so does the SSD. You can't have 2 drives with copies of Windows in the machine. Keep the hard drive the way it is (disconnected) until you are sure that your SSD is not giving you problems (a week or so), if you have problems then reconnect the hard drive and disconnect the SSD. You again have a working computer so you can do troubleshooting. Once you are confident with the SDD, format the hard drive and use as a data drive. Right after you install the SSD and it boots for the first time you want to re-run the "Windows Experience Index" which will set your computer correctly to use the SSD.