Hi there. I'll be returning my SP3 tomorrow... I've been trying really hard to get it to work, but it seems impossible. In a nutshell, the main problem I'm having is that when the SP3 is on the "off" state (not sleeping) it will take about 3 minutes to boot. After I log in, a BSOD appears in about 30 seconds. The BSOD I'm getting is always the same "driver_power_state_failure" on 0x9F. After that the SP3 will boot ok and work as expected. Using the whocrashed application does not reveal any useful info since the "culprit" is ntoskrnl.exe on the ACPI.SYS module (power management). I called support 2 times... both times they take about 15 minutes to take my personal info and 10 seconds to tell me that I should do a reset. I don't except a MS engineer on the other side of the support line, but I do except something more helpful than "Did you install the updates?" and "You should do a reset" On the last reset I did yesterday I only installed Office and Visual Studio 2013... In short, there is not a single byte of code on the machine that don't come from MS, so there is no "3rd party driver" to blame. I also noted something very interesting... those 30 seconds after the login, none of the four external buttons works (volume up / volume down / power / windows key). So the problem is related somehow. When the 4 buttons don't work I know I'll be getting a BSOD in just a couple of seconds. I'm writing these lines in hopes someone from MS read this... since calling support and telling them about the problem is the same as telling it to my dog. I'm hoping I got a defective unit, since there is not much info the internet about this particular behavior.