Hi Everyone,I hope this will help you fix this specific issue you have on your Dell system.On your Desktop Screen Press "Ctrl + Shift + Escape" to bring up "Task Manager".Go to "File" choose "Run New Task" then "Create New Task" window will pop-up, Type in "msconfig" and put a Check Mark on Administrative Privileges in "Create New Task" window then hit "Okay"."System Configuration" window will pop-up, go to the "Boot" tab. Under Boot Options put a Check Mark on "Safe Boot" hit "Apply" "Okay" and "Restart". Your computer will restart and after you log-in you will notice that you are now in SAFE MODE.On SAFE MODE, go to Control Panel > Programs & Features > View Installed Updates.Look for the "Update for Microsoft Windows" & "Security Update for Microsoft Windows" that has the install date of August 2014 then Uninstall them ONE-BY-ONE. (Make sure to uninstall only the said update file name and addition, every time you uninstall one file it will prompt you to restart the computer. Just choose "Restart Later").After Uninstalling all those Updates from your computer, go back to the "Task Manager", refer to the instructions above but this time remove the Check Mark on Safe Boot, then hit Apply, Okay and Restart Later. Now, go back to "Control Panel", then open "Recovery" and choose Open System Restore.On System Restore window hit Next, choose a Restore Point (choose the date which has the last known good configuration) and hit Next. then FINISH.Heads Up!! The system restore process will take a while and after the System Restore process your computer will restart.... ..  . Log-in and it's back to normal. hope this steps will help you fix the issue.Cheers!!    
Hey there, I have a Dell 15r and it is currently running Windows 8.1. This morning it working just fine. I was on YouTube and a video wouldn't load, so I simply restarted my laptop. Thats when the trouble began. I wm now only able to log in, and once that happens, my screen is just black with a movable cursor. I've taken the battery out and that didn't work. I am however still able to CTRL ALT DEL and enter task manager, log out, lock, and switch user. How do I go about remedying this problem. Also, f8 and f11 dont take me to the Launch Last Healthy session or whatever and I'm extremely frustrated. 
Black screen with movable cursor