At this link you can download the latest notebook drivers from Asus, here.
- Just select your operating system and download the latest version and try that. Make sure to select x64 bit if you have 64 bit Windows.
If not, then I found two matches to what you told me on the Asus website, here.
I'm assuming this one is yours, the M51Ta?
In any case, I found this.
- However, according to what you've already told me, that's likely what your already using. :(
I also found this.
- It's a later version then the one on the Asus website, but I'm not sure if it supports the hybrid behavior of your laptop or even your hardware in general.
Let's just say that I took a long time posting back because I was doing whole load of Googling :P
Please, let me know if you need anything.