"The drive where Windows is installed is locked.Unlock the drive and try again."

Three months ago, I purchased a brand new Windows 7 computer - Intel Core i7-3770/ 8.0 GB.

During three months period, I had ZERO problems/issues with my computer.

After receiving e-mails from Microsoft &quotWhat are you waiting for&quot, I upgraded it to Windows 8.

Since then, I have had two refresh, and four days ago, a clean install of Windows 8, because NOTHING WORKED. No refresh, no reset, no MS-DOS, no restore point, no repairs, etc...

What to do when you get the following message on &quotthe most stable&quot, Windows 8, operating system?

&quotThe drive where Windows is installed is locked. Unlock the drive and try again.&quot

I got that message after the following:

I wanted to open a PDF file from my customer on OUTLOOK - a regular, every-hour procedure - and my computer froze. Nothing worked therefore, only manually disconnecting my computer from the power source, I was able to shut it down.

After I restarted, I could not get passed the login screen - my computer used to enter the &quotblue background color and nothing else&quot mode.

I decided to use USB Flash drive to repair Win8 but it failed. I wanted to refresh my Windows 8, but I got that message:

&quotThe drive where Windows is installed is locked. Unlock the drive and try again.&quot

Just 4 days ago, I did a &quotclean install&quot of Windows 8 OS.

What should I do besides another &quotclean install&quot of Windows 8?

I've tried SFC/SCANNOW in MS-DOS but got the following message:

&quotWindows Resource Protection could not start the repair service&quot.

If I click on &quotRe-image your computer&quot -- &quotAdvanced&quot -- &quotAdd Drivers&quot -- &quotOK&quot, I can see my computer files.

But of course, I don't have an image of my computer.

If I try to use System Restore, I get the following message:

&quotTo use System Restore, you must specify which Windows installation to restore.

Restart this computer, select an operating system, and then select System Restore&quot

View the full article