Dell GX240 User's Guide - Page 205

Diagnostics Messages When you run a test group or subtest in the Dell Diagnostics, an error message may result. These particular error messages are not covered in this section. Record the message on a copy of the Diagnostics Checklist found in "Getting Help." Also see "Getting Help" for instructions on obtaining technical assistance. Diagnostic Lights Should your computer fail to operate, lights on the front panel and back panel of the computer provide diagnostic codes that can help you troubleshoot a computer problem. The following sections describe the meaning of the diagnostic codes. CAUTION: Before servicing any components inside your computer, see "CAUTION: Safety Instructions." Front Panel Lights Power Switch Diagnostic Light Codes Power Light Code Cause Action Blinking yellow The computer power Ensure that the voltage supply may have failed. switch setting is correct. If the computer still has no power, see "Getting Help" for instructions on obtaining technical assistance. Solid yellow A device on the system Be sure that each board may be faulty or microprocessor is properly is incorrectly installed. seated, remove all expansion cards, and then reboot. If the computer does not boot, see "Getting Help" for instructions on obtaining technical assistance. Solid green and a beep code A problem was during POST detected while the BIOS was executing. See the previous table for instructions on diagnosing the beep code. NOTE: Warning messages are generated by either your application programs or your operating system. See "Software Problems" and the documentation that accompanied your operating system and application programs. Solving Problems 203