DUDE!!!!!
you have my same problem...try this ...make XBMC your default dash...evoxdash.xbe or whatever you use...
normally avalaunch or other dashes corrupt over time just like yours but for some reason XBMC will always work....
I also thought it was GPU heatting up but now i see from you that that is not the case...
Its not your PSU!!! I just got a brand new psu for 25.00 $ and it didnt fix the problem...but it did fix my burnt out old PSU ...
so use xbmc as your dash and it will never corrupt while in xbmc...but launch another app and it freezes\gfx corrupt...then when you reboot it freezes at flubber..
also best to use a noani\nologo bios like X2 4981 or 4977 with all off so you wont freeze so much at flubber since it wont be there and boot to xbmc.
What parts did you press on the mobo to fix it?
glad to hear you have my prblem
