Hi mittyrk,
Let's Perform a Clean boot and check.
To help troubleshoot error messages and other issues, you can start Windows by using a minimal set of drivers and startup programs. This kind of startup is known as a "clean boot." A clean boot helps eliminate software conflicts.
I would suggest you to boot the computer in clean boot i.e disable non microsoft services.
The purpose of disabling non microsoft services is to check if any of these services is causing the issue.
Follow the steps below to boot the computer in clean boot:
Perform clean boot and check if you have the issue.
1. Click Start, type msconfig in the Start Search box, and then press ENTER.
User Account Control permission
If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.
2. On the General tab, click Selective Startup.
3. Under Selective Startup, click to clear the Load Startup Items check box.
4. Click the Services tab, click to select the Hide All Microsoft Services check box, and then click Disable All.
5. Click OK.
6. When you are prompted, click Restart.
7. After the computer starts, check whether the problem is resolved.
Note : Reset the computer to start as usual
After you have finished troubleshooting, follow these steps to reset the computer to start as usual:
1. Click Start, type msconfig.exe in the Start Search box, and then press ENTER. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2. On the General tab, click the Normal Startup option, and then click OK.
3. When you are prompted to restart the computer, click Restart.
If the issue is resolved check which third party is causing the problem, referring the link given below:
http://support.microsoft.com/kb/929135
Regards,
Divya R – Microsoft Support.