Windows 7 no 32-bit colour support???

[The following are not the problems i faced on Windows XP]. I've connected my PC via HDMI 1.3!

I installed Windows 7 x64 in my PC. The real big problems i'm facing is with Nvidia.
1. First thing scaling didn't work i tried to fix it but no hopes. Good my monitor had built in scaling.

2. 59hz monitor refresh rate is another pain. My display works perfect in 60.001hz @ 1920x1200 resolution but it still resets to 59hz. Nvidia in there latest driver has informed that its the problem with Windows 7 OS. And microsoft says there is no theartical difference from 59hz and 60hz. Well there is huge difference especially when your play movies via DXVA in Media player classic home cinema where you your full colour range and shaders which causes some kind of boxing and not artifacts! Everything was proper in Windows Xp

3. Finally i don't about other but i've noticed massive difference in colour depth which is set to 32-bit but its showing only 24-bit colours which can easily be noticed in movies and games like Crysis. HDMI 1.2 supports upto 24-bit colour. But PC or PS3 has HDMI 1.3 which support 32-bit same as DVI connection. My monitor has upto 48-bit colour depth so the difference in colours while in 24-bit can be easily noticed.

Seriosuly is this a design flaw or enabling these would cause different problems. If any one has got a solution for this i would be happy to hear!

I had some problems like your's when I was using the betas or RC, but in the RTM, I'm not.