Uninstall all current graphics drivers (just uninstall everything related to AMD/ATI). Reboot your computer. Some may want to go into safe mode first and clean up the registry using a registry cleaner program. Download new drivers and install these. Reboot again.
If you did all these steps and also cleaned the registry there may be a driver compability issue between JPCSP and your drivers. AMD/ATI is notorious for causing bugs, especially related to shaders. There's a thread about it here: http://www.emunewz.net/forum/showthread.php?tid=3894
But more importantly, don't you have a list of the hardware installed in your computer?
Downloading wrong drivers for your card can also cause issues.
If you did all these steps and also cleaned the registry there may be a driver compability issue between JPCSP and your drivers. AMD/ATI is notorious for causing bugs, especially related to shaders. There's a thread about it here: http://www.emunewz.net/forum/showthread.php?tid=3894
But more importantly, don't you have a list of the hardware installed in your computer?
Downloading wrong drivers for your card can also cause issues.