New to Mac

After a long time getting here Wed afternoon I bought this Mac mini... and of courser I'm having some issues.

A)  When I leave it unattended for a period it goes black- sleep, hibernate coma razzamatazz whatever it's called.  Great!  that's what it's supposed to do.  BUT when I try to restart it asks for my password and won't  respond to the keyboard.  I have to 'force' off then start again; type fine and go about my business until next blackout.  WHY?

B)  I'd like to change the size of the displayed page (zoom in windows)..  When I hit max button it expands the display to the edges of the screen- but it doesn't zoom.    Hang on I just zoomed (on this page) via the view tab.  How can I do this 'globally'?  I looked in "System preferences' but didn't see anything.

T I A 

For A, I would try to re-set the PRAM.

• Shut down the computer.
• Press the power button.
• Before the grey screen appears, press the Command, Option, P, and R keys at the same time.
• Hold the keys until your computer restarts and you hear the startup sound a second time.
• Release the keys.

For B, I'm not sure if you mean this, but go to System Preferences, then Displays, then change Resolution from Default to Scaled and choose a different option to make text larger everywhere.

Thanks Dave.  

B has helped.

I don't have an Apple keyboard- using a usb kb- so no command or option keys.  I'll take to store next time I go for another matter.

If it's a Windows keyboard, the keys would be 

Windows key + Alt + P+ R

You will see a lot of Command-key things you have to press. Put a sticker on your Windows key that looks like this --> ⌘ <-- and now it's a Command key.