mine is dell 7559 and recently my apps start crashing after 2mins or 1 hour of usage. suddenly stopped working like that. and after awhile it will go on bluescreen. PAGR FAULY IN NONPAGED AREA, MEMORY MANAGEMENT. stub recvd bad date some of my apps stop working while usig them. it's really a cause for concern. i updated my firmware - still the same problem i reset it - still same i have installed a TB of WD hard disk when i purchased it like 3 months ago and had no problems however, 4 days ago i started to hear a click noise at times. do u think this has something to do with this? please help. it's really frustrating