In my opinion, HP only sells so many computers because they are cheaper than anyone else. Every HP one of my friends at school have has hard some kind of hardware issue, like the battery health failing after 6-8 months on two of them. The web cam stop working on two of them, and the fans suddenly stop working one day on one. A friend also just had her HP charger stop working after having the computer for three months A couple people have Toshibas and to my knowledge haven't had a problem. A couple others also have Dell laptops and the main problems seem to be HDD and ram related, because Dell had been getting those from the cheapest makers possible until recently. I understand that all computers are capable and likely to have issues, it seems to me that HPs are the most prevalent.
Keep in mind those are just my experiences and/or opinions based on those experiences and like they say, "mileage may vary."