dwm.exe stops responding, resumes normal, stops again random

March 12, 2012 at 15:13:22
Specs: Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110622-1506), Intel® Core™ i7 CPU X 990 @ 3.47GHz / 12Gb DDR3 668MHz -1600 CL9 240-PIN DIMM
after my computer runs for around 3 or so hours the dwm.exe freezes and stops responding for a bit, freezing every thing for a few seconds to as long as 2 minutes or so.

It happens at random, thoue i can get it to happen (but only once it started happening the first time after that 3 or so hours after reboot) by clicking fast on multiple things or keep clicking the time on the task bar.

rebooting fixes the problem but only for a few hours (3 or so) then it starts again

i found out that it was dwm.exe from a program by Sysinternals called Process Explorer with the window status column enabled which showed dwm.exe not responding


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#1
March 12, 2012 at 19:17:38
Might be worth checking temperatures, although in this respect it's surprising that it runs for another 3 hours after reboot.

Otherwise, if this has happened fairly recently it might be best to run System Restore.

Always pop back and let us know the outcome - thanks


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#2
March 12, 2012 at 21:22:54
temps look normal
| 19-23c cpu | 23-24c motherboard | 43-45c gpu | 30c for c drive |

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#3
March 13, 2012 at 02:00:08
Desktop window manager is responsible for the graphical effects such as live window previews and a glass-like frame around windows (Aero Glass), without draining your CPU.The dwm.exe file is located in the folder C:\Windows\System32. In other cases, dwm.exe is a virus, spyware, trojan or worm. You will have to scan your system for virus, trojans and malwares.

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#4
March 13, 2012 at 05:21:24

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#5
March 19, 2012 at 19:24:42
I've updated my ATI Radeon graphics driver for my hd6970 card from v12.1 to v12.3 and that seemed to have fixed the issue

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#6
March 19, 2012 at 19:52:49
Glad to hear you are OK now and thanks for taking the trouble to let us know the fix.


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