Hi davesphoto,
Method 1-
Step 1-
You need check if the issue persists in Safe Mode as well.
To log on to Safe Mode, you need to follow the steps from the article-
Start your computer in Safe Mode.
Note: Make sure you log back into Normal Mode after performing all the troubleshooting steps.
If the issue does not occur in Safe Mode, then proceed to Step 2.
Step 2-
I would recommend you to perform Clean Boot.
Putting your system in Clean Boot state helps in identifying if any third party
applications or startup items are causing the issue. You need to follow the steps from the article-
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
Note: You need to follow Step 7 from the article to get the computer back to
Normal Startup after performing all the troubleshooting steps.
Method 2-
Try logging into a different user account. Check if the issue persists over there. If yes, then refer the article-
Create a user account
Fix a corrupted user profile
Hope this helps!!