Summary: My son broke my last lap top. Unrepairable. I needed a replacement very quickly. The HP Pro book 4535s offered all the utilities I was looking for . Speed, software, HD, SRS sound, 10 key pad, Office programs. Nice laptop. fast,lots of memory and great video and sound . I have had some problems with the software and loosing files. But working them out with HP support.Cooling fans are very loud but not a deal breaker.