black screen in blender with Win7 64 Bit & Nvidia GT325M


i got a problem with blender 2.49 using OS Win7 64Bit and NVidia GT325M VideoCard with Optimus mode.
Thing is, the BlenderScreen blacks out when i minimize and maximize the blenderwindow and doesn’t recover.

Also the Box Selection (Hotkey: B) and Circle Selection (Hotkey: BB) in Edit Mode don’t show the selection frame when pulling cursor.

Does somebody happen to know a solution?

Pleeeeeeese !?


Same as this

Aaaah yes, those are exact my problem too.

Found a solution for one part of the Problem with the NVidia Grahiccard and posted it here:,

Tanks :slight_smile: