Hello and Merry Christmas!
My computer has, just today, started this issue where internet connectivity will drop and the active program window will become unresponsive. I cannot open new programs, new windows, CTRL+SHIFT+ESC and CTRL+ALT+DEL do not work, the start menu doesn't respond and eventually all I'm left with is that the mouse is able to be moved. After a time a small error message opens that says effectively "The application has stopped responding." and it does not indicate any program that is not responding, just Microsoft Windows. Clicking on Cancel or End Process does not do anything. I'm unable to end any unresponsive tasks anyway because I cannot open Task Manager or a command prompt window. I can't even shut down.
After several minutes the issue goes away and I can use the machine again, but only for a little while because it happens again.
Through Google I've found where other people have had this issue but none of the things they say fixed theirs is working on mine.
I have tried:
Microsoft Security Essentials
sfc /scannow (which did find an error and corrected it)
Safe Mode (works with no problems, it's how I'm writing this post)
I ended the dwm.exe task because some people said that's what was causing the issue, but it happened again shortly after I did this.
Let me know if you need more information. Thanks!
Edit: Maybe I fixed it. In safe mode I uninstalled every anti-malware and antivirus I had except Microsoft Security Essentials, booted normally, and it hasn't happened in about ten minutes. Here's hoping.
Edited by Trind, 25 December 2016 - 09:38 PM.