Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Big and Powerful, but

I bought this unit new and was pleased with it at first. Large, powerful, and nice looking, but After 5 years of not heavy use I have had to replace the touch pad at 2.5 years and now the unit wants to start on its own so it does have some problems as 5 years old is not old enough to be going bad this much so I would not recommend this unit since it is not dependable. A unit this size should run without problems for at least 15 years.