Scan the machine with Malwarebytes, after updating definitions. Let it remove all it finds.
------
You have drivers that are causing issues with relation to power settings.
------
Highly recommend you remove Norton/Symantec with the tool found here, in safe mode:
AV Uninstallers - Windows 7 Forums
Reboot and install MSE to replace it.
---------
Then uninstall all of your Arcsoft software in order to remove this driver giving troubles:
Afc Afc.sys Wed Feb 23 01:58:55 2005
----------
Visit Sony's site for your model to download and install the latest Sony Firmware Extension Parser driver:
SFEP SFEP.sys Fri Aug 03 01:36:08 2007
----------
While there, update the card reader driver to latest:
ti21sony ti21sony.sys Thu Oct 18 09:51:56 2007
--------
Also while there, download/install the latest modem driver:
VSTAZL3 VSTAZL3.SYS Wed Oct 15 20:30:03 2008
------
Follow everything, and you'll have a great machine. Enjoy.