New
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Another post about "Display driver nvlddmkm stopped responding"
Display driver nvlddmkm stopped responding and has successfully recovered.
This event happens intermittently on some days, in any program, but in particular with Videolan VLC. This is a well known issue with lots of web posts, going back to 2010 and without a definitive method to identify the source.
This is not a gaming computer, and the video card is 18 months old Nvidia GT 620, with the latest Nvidia driver installed, powering a late model LG 21" LCD monitor. I tried three older Nvidia drivers as well, but they didn't help.
I replaced the HDMI cable to the monitor, installed a more powerful power supply. I am sure that this is a Windows 7 problem because this never happens when I boot into Linux Xubuntu, where I am using the generic Xorg Nouveau driver because Nvidia drivers are not nearly as good in Linux as they are in Windows.