T61 Hotkey Driver problem

[theofficialack]

I reformated my T61 with windows 7 and installed the win7 drivers. I installed every driver and the hot key.i restarted it and as i press volume keys/thinkvanteg button, no display on the screen so i check the services and i saw that lenovo on screen service was stopped so i started it but then it gave an error all about dependencies. Can u help me wth that?
T61 Specs:
TYPE 7663
Intel Core2Duo T8300 2.4GHz
3GB RAM
160GB HD
Windows 7 Home Premium 32BIT