I would best sell it. I had a HP Pavilion and had serious issues with it, they kept getting worse and each time I sent it in to HP it came back with pretty much just a clean install, I don't think they went near the hardware. (I'm presuming they knew what was the problem.) In the end it got to the point where my warranty expired and they couldn't do anything about it.
A friend of mine told me to go to a PC shop where he goes and he said the service is awesome. The guy there told me that Pavilion series is the ONLY series of laptop they don't sell (and this is a specialized store for laptops mostly, not like a generalized computer store, they focus on all laptops) He said it's cheap hardware and not good quality at all and he looked at it and told me my problem was unfixable, my hard drive was totally messed up (I couldn't copy files from it cause it went bad)
And if you notice they try to sell them everywhere for cheap, and it's true, look at any store online, and every store you go they have a special offer on a Pavilion and I know another person with the same laptop as me, I was so excited when I bought it so cheap and pretty good specs I told my friend back when I was in highschool and he got excited and bought the same one and he's had problems too and it sucks, I gave my laptop away in the end and bought a Toshiba, very satisfied, been using it for almost a year now and no problems, but you chose what works best for you and don't go for Pavilion that's for sure. HP made a really bad move with that one.