installed new Razor Mouse drivers now mbp wont start!

I purchased a new Naga Razor mouse recently and plugged it in and was working perfectly. I decided to download and install the drivers for the mouse anyway. at the end of the installation process i clicked restart and the computer has not rebooted since! it gets upto the blue screen where there is a quite square in the top right corner for about 1 second and then pauses at the blue screen.

I attempted to start in safe mode. It gets to the blue screen and begins a cycle of blank blue for 5 seconds, loading spindle for 5 seconds, a flash and then loop begins.


i have tried verbrose and resetting pram and neither worked.

i am currently on holiday and do not have my start up disc with me

any ideas?