At present, I am using Windows 8.1 previously I had Windows 7. My laptop is Inspiron 14 (N4050) and service tag is <ADMIN NOTE: Service tag removed per privacy policy> . I have a problem that when i open a laptop then lock screen doesnot appears instead appears black. sometimes it happens. And i felt that this happens mostly when abruptly shutdown of laptop and when windows is updated. What to do for this problems??
Also, next problems is After installing the microsoft visual studio 2013 USB drivers and bluetooth frequently goes off..And this happened after installing the MS studio 2013. I again uninstalled it, for solutions but couldnt get. i tried many ways...but couldnot found solutions. Also i updated the drivers and done windows update but couldnt solve this issues . I have found the same problem in other dell users i.e. Inspiron 14(N4050).
Please say me the solutions.