138 DiagnosticsEnhanced PSAYou can use the Enhanced Pre-Boot System Assessment (ePSA) todiagnose various hardware problems. The ePSA tests devices such as thesystem board, keyboard, display, memory, hard drive, and so on.NOTE:You computer may not support ePSA.The ePSA home screen is divided into three areas:• Device Tree – Appears on the left of the ePSA home screen. It displaysall the devices in your computer and can be used to select devices.• Control – Appears at the bottom-right of the ePSA home screen.Selecting the Thorough Test Mode check-box maximizes the intensityand length of the tests. To the left of the Control window is thecompletion bar that indicates the overall completion of the tests. Totest selected devices, click Run Tests. To exit the ePSA and restart yourcomputer, click Exit.• Status – Appears on the right of the ePSA home screen.The status area has four tabs:• Configuration – Displays detailed configuration and status informationabout all devices under ePSA.• Results – Displays all tests that are executed, their activity, and resultsfor each test.• System Health – Displays the status of the battery, AC adapter, fans,and so on.• Event Log – Provides detailed information about all tests. The Statcolumn displays the status of the tests.Invoking ePSATo invoke ePSA:1. Restart the computer.2. When the DELL logo appears, press to access the Boot menu.NOTE: If you wait too long and the operating system logo appears,continue to wait until you see the Microsoft Windows desktop;then, shut down your computer and try again.3. Select Diagnostics from the menu and press .