How to Fix - Computer keeps going into "hibernation mode" suddenly?

Computer keeps going into "hibernation mode" suddenly

I read a related thread that was close to my problem, but it wasn't quite the same thing.
Now, when I close the lid, my computer goes into hibernation.  That's what  I expect, and want.  When I open it back up, it prompts for a password, and goes back to the desktop or where I was.  Fine.
Here's what has recently started happening:
I'll  be working -- even in the middle of typing an email -- and the screen will suddenly go black.  I have to hold the power switch for a second or two (but not long enough to do a reboot) to get the password screen.  I enter it, hit the arrow, and it returns
right to what I was doing -- even in the middle of a word.
What is probably going on, and can I fix this?

Keys to the Problem Computer keeps going into "hibernation mode" suddenly

Download SmartPCFixer to Fix It (Free)

Some laptops go into hibernation suddenly without warning when they are overheating.
Are your fans clean?

I think so.  I use my laptop on top one of those bases that has two fans.  I think I'm good there.

If you failed to fix it, another option is to call Microsoft and walk through the process with a technician. To do this, dial "1-800-936-5700". Explain the error that you received and the steps in the update process during which it was displayed. The technician will be able to walk through the steps from getting a new product key to finishing the installation.

Recommended Method to Fix the Problem: Computer keeps going into "hibernation mode" suddenly:

How to Fix Computer keeps going into "hibernation mode" suddenly with SmartPCFixer?

1. You can Download SmartPCFixer here. Install it on your computer. When you open it, it will perform a scan.

2. After the scan is done, you can see the errors and problems need to be fixed. Click Fix All.

3. When the Fixing part is finished, your computer has been speeded up and the errors have been removed

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