Dell Diagnostic Light Patterns and Beep Codes: How to Identify and Fix Hardware Issues

🖥️ Dell Desktop/Tower

🟦 Inspiron Desktop
🔗 Diagnostic Lights – Inspiron Desktop

🟦 Vostro Desktop
🔗 Diagnostic Codes – Vostro Desktop

🟦 OptiPlex
🔗 Diagnostic Codes – OptiPlex

🟦 Precision Tower
🔗 Diagnostic Codes – Precision Tower

🟦 XPS
🔗 Diagnostic Codes – XPS

🟦 Alienware
🔗 Dell Support Website – (Alienware devices do not have a general standard for diagnostic codes; you need to refer to the specific product manual. You can do this by searching for your specific model on the support page and navigating to Support Resources  -> Manuals & Documents)