Hey guys i got a new dell vastro 470 last year and i upgraded the hdd to a SSD Kingston Hyper X 240g. so at first i had issues with crashing frequently and on reboot black screen with pls select boot device... so dell and MS troubleshooted and said it was my motherboard sata 0 that was defect.. so the next day(yes the next day..) dell replaced my motherboard and it seemed to have fixed the issue. now,once in a while i get a freeze up especially on Facebook,blue screen critical process failed.. on boot that same please select boot device.. appears??i go in the bios and see that the system see's my SSD and all the rest ,before they replaced my motherboard when it use to crash i could not see the ssd .. so the odd thing is that if i unplug the ssd and place it on another sata port it boots no issue!it's like if windows blocked that port... im thinking it's my ssd?or just windows 8 with it's issues... i attached the zip file of the diag.