XFX 9400GT Driver stop working on Win7x64

[LordALMMa]

I'm using Windows 7 since beta and now I'm with Windows 7 Ultimate x64.

During BETA I was using just one monitor (Samsung 732NPlus).
Since the final release of Win7 I've bought a second monitor (LG W2252TQ).

I'm using them together (Samsung with RGB connector, LG with DVI).

Since the final release I'm having the same problem from time to time: "The graphics card driver stopped and resumed".
During this, my screen freezes black for 1 to 3 secs.

I have already tried the latest BETA from NVIDIA and also the STABLE one.
It's the same with drivers from Windows Update.

I've disabled the option to get drivers from WinUpdate.
Removed all drivers and installed NVIDIA.
Just the same...

Strange is WHEN this happens:
- NOT during gameplay
- NOT every every time
This happens while using Visual Studio (usually coding), Word, Notepad (o.o'') and sometimes while surfing web.

Any clues?
For now I just can't format my HD again but I'll try this within a month it this error persists.


+----- EDIT -----+
Samsung SyncMaster 732NPlus @ 1280x1024
LG Flatron W2252TQ @ 1680x1050

 

[torrentg]

Most likely, something to do with system ram.

Visit the maker of you ram modules' site to determine the correct Vdimm (ram voltage) and timings. Set the motherboard accordingly.

Also, could be caused by too much heat on the gpu. Try running with a big room fan blowing inside the open case, as a test.