I've only had the computer a few days, and thus far no problems.  I upgraded from an Intel Pentium 3220 with 4GB of RAM, to this computer, an i5 with 8GB of RAM, and an SSD.  This computer is much faster than my old one.  I'm far from an expert on computers, but I think this is attributed to the additional RAM and the SSD.  Whereas my old computer would take a minute or two to "wake up" after going into sleep mode, this computer wakes up instantly.  Love it so far.This is the first time I've purchased from Blair Technologies. They have been great in terms of providing documentation with the computer, and sending follow-up emails to make sure everything is working and that I'm happy with the purchase.