Windows 7: Media Center stop playback randomly

Windows Experience Index. So you have a browser with a search function?

WEI:
Processor: 3,3
Memory: 4,6
Grafic: 4,3
Game Grafic: 5,3
Primary disk: 5,4

Sorry if the terms are wrong, but they are on danish on my system.

As i thought, the bottleneck in your system is your CPU.

Try not running other processes during playback. As I do not know what processes are running on startup or are started when a program is opened on your PC, I cannot give specific advise, but this is a standard procedure to stop resource hungry resources. Doing so may free up your CPU for heavy tasks like WMC - but read on...

I have read several reviews of your PC and none tested WMC as your PC's CPU/Chipset combo does not support DirectX acceleration and has a decoder issue but intead relies on the nVidia drivers for GPU acceleration - which is why the other players run 1080p fine and WMC does not.

Nvidia ION Platform: GeForce 9400 + Intel Atom (page 8) - X-bit labs

I had a look at the task manager while movie playback and the CPU is no where near 100% at any time and neither is the memory usage and please notice that I have no problem playing movies if I disable subtitles. The error is some how related to turning on subtitles and I really dont believe that subtitles is that demanding on CPU or memory usage.

OK it's no where near 100% - what IS it at? What happens when you turn sub-titles on to CPU? I'm guessing max.

My CPU is at 4-5% recording HD Recorded TV in WMC.

Did you note the DirectX acceleration issue with the ION setup?

I just monitored a playback session with the following result. CPU usage during playback aprox 20% very stable and there was a small peak to about 45% at the point where playback stops and WMC returns to the screen where you can start playback of the DVD. Memory usage was 70% with no peaks - also very stable.

That's very interesting...I have 4GB of RAM also and my system has yet to peak at more than 40% of memory and like I said my CPU load is quite low during a recording session...my chipset is the Intel P35 and my CPU is an Intel E2180 Pentium Dual Core @ 2.66. Do you have a lot of background tasks or unneeded services running hogging memory?

I have disabled my resident protection from scanning writes to my recorded Recorded TV drive. This drive is scanned nightly, just in case, but you should be safe from malware on this drive as long as you do not add downloaded content to it or add copied movies from other sources.

Perhaps some system tweaks will help.

Apparently this is related to watching PAL movies with subtitles and having an nVidia graphics card....

W7 Media Center freezes when watching DVD - NVIDIA Forums

Microsoft admits that there is a problem, but doesn't provide a solution....

DVD playback in Windows Media Center may randomly stop

Microsoft is finally ready with a fix for this issue - DVD playback may stop intermittently when you play a DVD in Windows Media Center and enable DVD subtitles in Windows 7