Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy it. I've had months of headaches.

I bought this 6 months ago. Black screen. Nothing would make it work (windows XP). I called tech support and they said it wouldn't work with XP without a factory adjustment and that I had to send it back. I did. 4 months later when I hadn't heard a peep from them (almost forgot about it), I contacted them and asked where it was. They said they never got it. I sent them the tracking info showing that not only had they received it, but someone signed for it. They replied that they would send it to me right away. Two days later, I got it. Black screen. Now I'm online trying to find out how to get this dud to work. What a colossal waste of time.