Bought a New Laptop. But it's slow and freezes

An SSD would definitely help this laptop. If you are not overly concerned with disk space, a lower capacity 250gb drive are relatively cheap now, so invest in one, and you will definitely notice quicker performance. If you are still getting freezes with an SSD in there....then there may be something else causing it, but the SSD will still help overall.

Does the noise sound like it is coming from the hard drive, or is it more like a fan?