Good standard advice when things are acting up is to check to ensure all your drivers - e.g., video and tablet drivers - are fully up to date, and that you've updated Photoshop to the latest patch (CS5 has a 12.0.1 update, accessible via the Help - Updates... menu).
Did this happen once during an edit session, or has it become persistent - i.e., it happens even when you restart Photoshop?
If it is persistent, beyond the above advice, some things to try:
1. Clear your Photoshop preferences by pressing Ctrl-Shift-Alt immediately after starting Photoshop from it's shortcut or menu item.
2. Temporarily disable the OpenGL setting in Edit - Preferences - Performance to see if that affects the issue.
3. Check your Windows event logs for errors or failures.
Hope this helps!
Thanks for the help
I tried resetting the prefrences a long time ago, and restarting photoshop makes it work every like 5 times...Disableing OpenGL doesnt help, and idk where to find errors...
Thing is, it usually works at the beggining then stops.And theres one PSD that whatever i do it doesnt help, no matter how many times ill open photoshop.
I tried installing photoshop cs4 too but there was the same problem with the brushes.Maybe i have a program conflicting with it?Thnx anyways
You didn't say whether your video drivers are up to date. You need to check and update them if they are not.
I'm afraid you may have to get smarter about maintaining your computer to fix this one.
idk where to find errors...
Assuming you're running a modern operating system...
1. Click the Start button, right-click Computer, choose Manage.
2. Expand Event Viewer - Windows Logs and click on System. Give it a few moments to fill in.
3. Look for Error entries.