The SQL Express AdCenterDesktop service could not be started

Although I have succeeded in installing adCenter desktop it results in receiving the following error message at Windows start up.“The SQL Express AdCenterDesktop service could not be started. Make sure you have adequate permissions.” Thereafter a “Contact Ad-center support team” message pops up.
I’ve already wasted my entire weekend to find out a solution. I wonder why Google Adwords came in a technical mask though it has worthy tools beneficial for users. Surely, most of the users are expecting a more user friendly instruction from Google as it possesses quite talented programmers.
Can any of you help me in the stated issue, please?

