Timing with new computr hibernation.

Right-click anywhere on a blank area of your desktop, select "Properties", then click the "Screensaver" tab. In the bottom panel of that tab, click the "Power" button. Under the "Power Schemes" tab, use the dropdowns to configure the various options to suit your preferences.

(Note: Hibernation can be a lifesaver for a laptop not connected to mains power; I don't recommend you shut it off on the "Running on Batteries" section. For a desktop, or an always-plugged-in laptop, hibernation is of little practical use)

Click "Save As", give that power scheme a name, click "Apply", confirm if prompted, click "OK", and reboot.

Alternately, under the "Hibernate" tab, you could disable hibernation, which comes with the same advice concerning battery operation offered above - generally not a good idea for a laptop which from time to time will be operated on battery power.

Timing with new computr hibernation.
It's not a laptop, but a PC.

However, I'm amazed at how small the tower is!

Well, IMO, hibernate ain't much use on a desktop; its prime function is to preserve data and settings without power consumption, though at the expense of disk space. Your call, of course, but if it were my machine, I'd just disable hibernate and not waste the disk space it requires. Just my opinion, mind you.

Timing with new computr hibernation.
I agree. It's just a nuisance, really. I know I can change it by going to Preferences in some place or other, but don't know where Preferences lives.

See my first reply, TK - that's how to get there.

Timing with new computr hibernation.
Thanks, Timber. I missed that paragraph somehow.