When I open a photo all I that comes up is a grey and white blocked square, if I switch it off of RGB color I can then see the photo, but then I cant save it as a JPEG... what the heck is going on?
In the Device Manager, which can be found in your Control Panel, you'll be able to find out which graphics card you have. Chances are, it's made by Nvidia or ATI/AMD.
Once you have that information, go directly to the manufacturer's website (nVidia or ATI/AMD) and download the latest driver. (Note: Simply doing a Windows Update is does not guarantee you are using the latest driver. You must go directly to the nVideo or ATI/AMD websites to get the absolute latest driver.) After you update your driver, turn on Use Graphics Processor in Photoshop preferences. (via http://forums.adobe.com/message/4294508#4294508)
Im running it on several computers and it does seem to like some graphics cards better than others. One it really doesn't like is NVIDA Gforce 210. It's a cheap card but better then a lot of motherboard based cards.
If you can get there, please provide the System Info from Help > System Info to the forum here...
Your best bet for resolving this would be to find out what video card you're using, and to go online and download the latest driver for the video card to install.
That should fix most graphical issues you see in PS CS6 beta assuming the card and driver are both supported.
What version of Windows Vista?
We actually don't offer support for the Windows Vista operating sytems.
We don't allow installation of PS CS6 on Vista no SP and SP1. Only allow installation on Vista SP2. (so I'm assuming you're using SP2)
So go get those video drivers updated, and let us know how it goes!