stand by not working when changing graphics adapter identification

Hello, RivaTuner creators and users. I was wondering. Is it only me who has this issue? I changed my graphics adapter identification with a Quadro. It works great as a Quadro and I use a lot of cad software, so I'm happy about that. The problem is that It messes the stand by. When I return from stand by my laptop freezes. It does that with both Windows XP and Windows Vista 64 bit (ran of corse with Disabled Signed driver checking feature via F8).

What can I do? I realy need to keep the sleep functionality of my laptop and also use my video card as a quadro. Thank you!