Asus N56VZ driver problems

I got the laptop a few days ago and It came with Windows 8, so I used it until I got an ssd. Today I replaced the hdd with ssd and installed Windows 7 but now I'm having problems with graphic drivers and audio drivers.

When I install both intel hd and nvidia drivers, DWM crashes on reboot and everything looks like crap. There's flickering and what not.
Second problem is with audio. Volume was A LOT higher on Windows 8 than it is now. 80% at windows and 1/3 in any media player in W8 was like 100% at windows and ~70% in media player on W7.

I really don't want to use W8 so I need some help to sort things out.

EDIT: Self fix. I installed older intel hd drivers and it, apparently, works. Any ideas why?

Also, which wlan and bluetooth drivers should I install? On ASUS site there are intel wi-fi and atheros wlan drivers.

 

Sometimes driver updates do more harm than good.

WLAN driver will depend on which card you have. You can figure this out by checking the device id in Device Manager or use software utilities that provide detailed system info. Or just download one, install it, and if it doesn't function properly, uninstall it and install the other.

 

Any thoughts on the audio volume being significantly lower?

 

Not from experience. A spitball theory would be inherent volume normalization or dynamic range compression for that particular audio driver; that, or something is/was amiss with your speakers.