HP monitor 2009m goes black on a reandom basis.

HP monitor 2009m goes black on a reandom basis. Starting in safe mode (as recommended) OK once but not every time. What is causing the problem and how does the problem get fixed?
Sorb1

Eric Ross,
Hi,
I did as You indicated and found on the top left hot corner was set to "put display to sleep" and the lower left hot corner was set to " disable screen saver", Both Right side upper and lower hot corners were not set (they had a -)
So, I adjusted the two "set" hot corners to - to match the other two. No incidents since of any display going black on a intermittent basis or at all, Thank You Very Much for Your Reply and Insight! Will post as "Correct Answer"
6stringsor12

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Please re-post if you require additional support. Thank you for posting on the HP Forums. Have a great day!
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HP monitor 2009m goes black on a reandom basis.

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