Since you mention "Preview", I guess that you are using Mac OS X. Could you state what version you are using?
Likewise, I'd like to make sure that you are using the latest version of Photoshop. (it should be 13.0.1)
You can get both of these information easily:
When Photoshop is running, go to the Help menu, and select "System info..."
You can copy the contents here, so that we can maybe see what makes Photoshop misbehave on your machine (it will tell us where it is installed, what plug-ins are running).
You might want to delete your serial number.
Hi Sorry, getting my 2 machines confused. Photoshop works perfectly on the Mac, it is the PC with problem.
I have included the info requested:
Adobe Photoshop Version: 13.0.1 (13.0.1 20120808.r.519 2012/08/08:21:00:00) x64
Operating System: Windows 7 64-bit
Version: 6.1 Service Pack 1
System architecture: Intel CPU Family:6, Model:10, Stepping:5 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, HyperThreading
Physical processor count: 2
Logical processor count: 4
Processor speed: 2800 MHz
Built-in memory: 12278 MB
Free memory: 9943 MB
Memory available to Photoshop: 10988 MB
Memory used by Photoshop: 70 %
Image tile size: 128K
Image cache levels: 4
OpenGL Drawing: Enabled.
OpenGL Drawing Mode: Advanced
OpenGL Allow Normal Mode: True.
OpenGL Allow Advanced Mode: True.
OpenGL Allow Old GPUs: Not Detected.
Video Card Vendor: NVIDIA Corporation
Video Card Renderer: GeForce 8800 GTS/PCIe/SSE2
Display Bounds:= top: 0, left: 0, bottom: 1080, right: 1920
Video Card Number: 1
Video Card: NVIDIA GeForce 8800 GTS
Driver Version: 18.104.22.168
Driver Date: 20120515000000.000000-000
Video Card Driver: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Video Mode: 1920 x 1080 x 4294967296 colors
Video Card Caption: NVIDIA GeForce 8800 GTS
Video Card Memory: 320 MB
Video Rect Texture Size: 8192
Application folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\
Temporary file path: C:\Junk\
Photoshop scratch has async I/O enabled
Startup, 97.7G, 20.5G free
Required Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Required\
Primary Plug-ins folder: C:\Program Files\Adobe\Adobe Photoshop CS6 (64 Bit)\Plug-ins\
Additional Plug-ins folder: not set
Optional and third party plug-ins:
PhotoTools 2.6 Hidden NO VERSION
PhotoTools 2.6 Hidden NO VERSION
PhotoTools 2.6 Professional Edition 2.6.5
PhotoTools 2.6 Professional Edition Batch 2.6.5
PhotoTune 3 3.0.7
PhotoTune 3 Batch 3.0.7
Topaz Clean 3 10.0
Topaz ReMask 3 10.0
TopazRemaskAutomate NO VERSION
Plug-ins that failed to load: NONE
Installed TWAIN devices: NONE
Hope this info helps
Hello, Yes, it might very well be useful, I see that you are using several third party plug-ins, I'd first check in that direction.
It is possible to boot without plug-ins by holding down the shift key, to see if it is a plug-in that causes the issue, as explained in http://helpx.adobe.com/photoshop/kb/troubleshooting-plug-ins-photoshop-cs6.html
Then, if Photoshop works ok, check the following:
I see Phototools 2.6 hidden no version, then the 2.6.5 (the good, current version, according to: http://www.ononesoftware.com/support/360/ ), I don't know if this is normal, could you check if they are not installed twice?
Topaz clean is at 3.0.2, and remask at 3.2.1, I'd check their version (as it is listed at 10.0 here)
Another thing would be to check if newer graphics card drivers are not available from the nVidia website.