Hi there! Because the forum you originally posted in is for beginners trying to learn the basics of Photoshop, I moved your question to the Photoshop General Discussion forum, where you'll get more specialized help.
To help others help you, please read through this article and provide any additional relevant details.
Your title says crash, but the body says hang: which is it? Those are very different behaviors.
And when exactly does it crash or hang? While selecting the file in the open dialog, after the file is opened and should be displaying, or during the file read?
I have only recently upgraded to Windows Photoshop CS6. When I try to open a picture file,when in 64bit mode, Photoshop hangs. In that my cursor becomes a rotating blue ring. I have waited some time but in the end I am forced to use CTRL+ALT+DELETE to exit Photoshop. I have no such problems using 32Bit Photoshop. I am using an Intel Core i5-2500 CPU @ 3.30GHz PC running in 64Bit Mode.
Have you downloaded and installed the updates for Photoshop?
Have you updated your video card driver (bugs in drivers caused a hang in gpu_sniffer.exe, that would then hang the open dialog) from the GPU maker's website?
I originally purchased, downloaded and installed CS6 version 13.0.1. Yesterday I installed update version 184.108.40.206. Unfortunately, CS6 x64 still hung up whenever I loaded a file. However, there may be other Photoshop updates that I am not aware of.
Your second suggestion looks interesting. My PC supports an ATI Radeon HD 5700 Series "Quiet" Graphics card. I regularly update the drivers. However, I could take another look at the GPU website.
Thank you for your advice. I will report back.