HP Pavilion dv2500 series crash with multiple monitor instancing

[eraubum]

Hey guys,
Very recently my computer has been crashing with the jagged lines of death. After it reboots, the screen becomes split up into multiple "instances" of one screen, very similar to if you select the "tiled" option in windows background. Example:
__________________
| Normal| Normal Image|
| Image | |
| | |
______ _________ |
|Normal | Normal Image|
|Image | |
___________________

Where the box around the outside is my monitor, and four "normal" images (i.e. the desktop, mouse cursor, etc.). No idea what is causing this, however, uninstalling then reinstalling the graphics drivers seems to temporarily fix this. If anyone has heard of a similar problem or knows what to do, please help!

Comp info:
HP Pavilion dv2500 series
NVIDIA GeForce 8400M GS 64MB Dedicated Video Memory (from nvidia control panel info)
2GB RAM
160GB HD
Centrino Core2 Duo T7250 @ 2.0 GHZ
Windows Vista 32Bit Home Premium

 

[lamo]

this is videochip faulty(or video memory). afaik, since geforce 8400go, nvidia provides special MXMII videocards in most laptop models. so replacing seems to be simple, but in this model you can't do this. so you can replace MB or repair it