column 'process name' disable by virus(invisible)

Well, I'm not sure that viruses are the cause, but the Process Name column can become invisible.  I assumed that perhaps I had inadvertently collapsed it to a width of zero, but that's just a guess; I don't know how it happened.

Using a variant of molotov's advice, I did try exiting PE, modifying [HKEY_CURRENT_USER\Software\Sysinternals\Process Explorer], and then restarting PE.

Within [HKEY_CURRENT_USER\Software\Sysinternals\Process Explorer], I changed ProcessImageColumnWidth from 0 to hex 40 (a temporary width).  This made the column wide enough to be seen and I could then set the width within PE.

The Process Name column is now independent of the other columns.  It cannot be moved from the left-most position and the horizontal scroll bar does not include it.  I'm not sure whether or not this is normal, but at least the column is visible now.

I had a similar problem with the Path column (it too was invisible), but I was able to fix that by deselecting and then re-selecting the column, a solution not available for Process Name.

Perhaps a future version of Process Explorer could set a minimum width for columns that are selected (especially if they cannot be deselected) to prevent this from happening.

columns 'process name' & 'PID'  are invisible (Disabled) due to
virus attacked.
Any solution possible without using anti-virus ?