![]() ![]() Touch or click the Run Your Test, and follow the prompts.Touch or click to check the box next to one or more components you want to test.Under Custom Component Test, touch or click Select individual components.Note: For more information refer to Dell Knowledge Base article, "How to Determine the Model Number of Your Dell Computer." A Diagnostic Boot Selected message should appear in the top right-hand side corner of the screen. Alternatively, tap rapidly at the F12 key as the system boots and select Diagnostics from the memory that appears. With the system powered off, hold down the Fn key and the power button at the same time. The first thing to do is to check if the Pre-Boot System Assessment ( PSA) Diagnostics can run. Diagnostic Indicators (Precision Workstations.).Diagnostic Indicators (OptiPlex Desktops.).Diagnostic Indicators (Vostro Desktops.).Diagnostic Indicators (Inspiron Desktops.).For information about Desktop LED codes, refer to the table in your systems User Manual or check out these articles:.Understanding Beep Codes on a Dell Desktop PC.For information about computer beep codes, refer to the table in your systems User Manual or have a look at this article:.These articles take you through the diagnostics LEDs and codes for the various models. ![]() This article is a General Overview that can go into a bit more detail than you would normally see. Most of this troubleshooting will normally be done as part of a specific troubleshooting guide for a particular fault. ![]() Issues installing software or Operating Systems ( OS). ![]() Onscreen error messaging about memory halts, overruns, size, or read issues.(Fig.2 Blue Screen Errors NMI parity error) System slow, freezing, or crashing, such as Blue Screen errors.The common types of memory issues you will see are: Memory troubleshooting typically breaks down into three sections: This guide deals with memory issues in desktop systems and how to troubleshoot and resolve memory issues. ![]()
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