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#11
A morning freeze may occur by a number of reasons.
Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest for at least 8 passes, preferably overnight.
If it start showing errors/red lines, stop testing. A single error is enough to determine that something is going bad there.
Check if the Power Supply Unit (PSU) supplying adequate power to the computer or not.
eXtreme Power Supply Calculator
Also let us know the wattage of the PSU.
Plus, a dismantle, cleaning up and re-seating of hardware may help a great lot.
Also I will eager to see what Britton30 suggests.