The fully automatic Graphical User Interface tool for any application using novel model based test suite generation techniques for a GUI. They are unable to control response time and time intervals are based on relationship between GUI events handlers and test cases with their responsibilities. We present a novel prioritization algorithm that enhances event handlers for the automated GUI tool. The proposed tool generates GUI events, it Captures and Playback event responses to automatic verification point of the results for the test cases which are written to a log file and corresponding report will be generated. This novel algorithm was able to detect new test suite and ordering of test cases to reduce a GUI fault integration defects. The number of faults detected for a single event are found after generating test cases for the application. The Average Percentage of Fault Detection (APFD) and charts has been used to show the effectiveness of proposed algorithm to find fault detection rate. © 2014 Science Publications.