I need some help - Strange repetitive line appearing on every image I open.

[Skye5EDC]

Has anybody got any ideas why I'm seeing this repetive line smeer on every image I open please? Photoshop is up top date. I'm pretty new to photoshop so apologies if there is a simple explanation.  Thank you 

[kevin stohlmeyer]

Those appear to be corrupted files. Are these on an external/removeable drive?

If so try copying to your main HD and open. If the issue persists, the file is corrupted.

[Peru Bob]

Try resetting the tools and/or preferences.
To restore preferences quickly using a keyboard shortcut:

Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) as you start Photoshop. You are prompted to delete the current settings. The new preferences files are created the next time you start Photoshop.
Note: Using the keyboard shortcut, preference files for custom shortcuts, workspaces, and color settings will also be reset to default.

from here:

https://helpx.adobe.com/photoshop/using/preferences.html#restore_preferences

[Peru Bob]

It could also be a graphics driver issue.

[Semaphoric]

How do they look if opened in somethong other than Photoshop?

[D Fosse]

This is the video driver. Go to the GPU manufacturer's site (Nvidia/AMD) and find an updated driver.