Now I can start my Mac Pro only in "secure mode." I'm still appears on all monitors a series of bands such as seen in the attached file. Someone can give me a diagnosis? Thank you.

Now I can start my Mac Pro only in "secure mode."
I'm still appears on all monitors a series of bands such as seen in the attached file.
Someone can give me a diagnosis?
Thank you.

The attached file is not showing.
In Safe/Secure Mode many Drivers are not loaded. When your computer works in Safe Mode, but not regular mode, two types of problems are implicated:
1) Third-party kernel extensions. a conflict with some part of Mac OS X means that when those extensions load, your Mac can not run.
2) Failed graphics card. Since the Driver for the display is not loaded, the display in Safe Mode uses a very simple built-in Driver. In regular mode, once the driver is loaded, all parts of the graphics card must be working, or you could get bands of color on the display (which is just what you reported).
Which Model Mac Pro Tower or MacBook Pro is this?

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