Computer locked up

I have AVG free loaded on my laptop .this afternoon it automatically loaded an update   gen said I should restart my computer I did that and received a blue screen showing "preparing windows Do not turn off computer" (it stayed like that for a hour and then went into my welcome screen  . I put in my password and then got a black screen  which is how it remains > I'm  going to power down until I figure out the problem ! Any ideas !

Hello Derek,

I am sorry to hear that.  Could you please let us know the version of AVG program in your computer and are you able to access Internet connection after booting your computer.?  Does the desktop icons are flashing frequently after the windows updates?

Do also provide us the screenshot http://support.avg.com/SupportArticleView?urlname=How-to-create-a-screenshot of the black screen to check and assist you further.

Hello Derek,

I am sorry to hear that.  Could you please let us know the version of AVG program in your computer and are you able to access Internet connection after booting your computer.?  Does the desktop icons are flashing frequently after the windows updates?

Do also provide us the screenshot http://support.avg.com/SupportArticleView?urlname=How-to-create-a-screenshot of the black screen to check and assist you further.

Derek, For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru