21 Troubleshooting.......................................................................................................................55Enhanced Pre-boot System Assessment (ePSA)...................................................................................................55Running The ePSA Diagnostic Utility......................................................................................................................55Beep Codes.............................................................................................................................................................57LED Error Codes......................................................................................................................................................57N-trig Digitizer Troubleshooting ............................................................................................................................58Installation IssuesTroubleshooting Steps:.......................................................................................................58Performance issuesTroubleshooting Steps:....................................................................................................58Performance issuesTroubleshooting Steps:....................................................................................................5922 Technical Specifications.......................................................................................................6123 Contacting Dell........................................................................................................................65