Would you please do some more tests to help narrow down the cause?
You can try the Clean Boot to see if the problem remains:
1. Click Start, Run, and type "msconfig" and click OK.
2. On the General tab, click Selective Startup.
3. Clear the boxes for the items that follow.
Load startup items
4. On the Services tab, put a check mark in the Hide All Microsoft Services
5. Now click on the Disable All button.
6. Click OK.
7. Click Yes to restart your computer.
If the problem disappears after the Clean Boot, You can then check all the
items listed on the Startup tab and the Services tab one-by-one, to see
which caused the problem.
Once you find the relevant application (may probably be the Embassy
application), please try uninstalling and reinstalling it. If the same
problem re-occurs after doing this, please let me know the exact
information of the application. Or you can directly contact our CSS to see
if it is a compatibility bug.
Please work with Dell to uninstall the relevant application to avoid more
potential problems. You may also try uninstalling and reinstalling the
device driver to see how it goes.
Microsoft Online Support
Microsoft Global Technical Support Center
Get Secure! - www.microsoft.com/security
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