No histogram display

The histogram does not display in either the 'levels' box or on the 'histogram' palette? I use Windows XP and have reloaded CS2 without success?

Reset your preferences as described in the FAQ.

<http://www.adobeforums.com/webx/.ef4a07f/1>

You either have to physically delete (or rename) the preference files or, if using the Alt, Ctrl, and Shift method, be sure that you get a confirmation dialog.

This resets all settings in Photoshop to factory defaults.

A complete uninstall/re-install will not affect the preferences and a corrupt file there may be causing the problem.

Thanks John

Have carried out the instructions as suggested but no success. Then reinserted the CS2 disc to 'Repair'any corrupted files but again still no histogram graph in either 'levels' or histogram palette?

What sort of image file do you have open?

I use TIFF and JPEG.

If you preference reset was successful (PS should have reverted to defaults) and the behaviour persists, you may need to repair or un-install/re-install.