Hi, I was working with an audio recording software just now when I faced this error (in the subject line). The screen blacked for 10 seconds or so and then came back. Also, I faced similar errors when I was using Power Point and a screen recorder software but the error was a bit different nvlkdm has stopped working. Also, I had just installed IE 9 beta (hardware acceleration), opened the first site and the system crashed and I had to do a hard reboot and unistall IE 9 to save my life from such errors again. The errors are just random. The nVidia drivers are downloaded the official nVidia and are the latest available for my DELL XPS M1530 with 8600M GT. (OS Win 7 Ultimate 32bit) I also got two BSOD's at different time with a message saying: "Unable to reset the display. A problem occured with the display driver driver" I noted this error code on the blue screen 000000x16 nvlddmkm.sys Dumping physical memory etc. etc. There are no Minidumps being formed in Windows/Minidump (I just enabled them now), so I wasn't able to post any of them :-| All temperatures normal, RAM test with Windows Memory Diagnostic/memtest/DELL Diagnostics pass, no overclocking. However, I perfomed the stability test with Furmark for my grpahics acrd and the display started flickering with dots. Earlier when I installed the driver and had the performed the stability, it had ran absolutely fine for more than 20 min. I read somewhere it can be an issue of Windows Update KB2454826 and I looked it in Installed upadtes to uninstall this but I didn't see it listed there.