Dell Technology Guide
Page 275
... see the documentation for assistance). System Messages for Desktop Computers NOTE: If the message you can use the status of the lights to help identify the problem. Possible HDD failure during HDD boot test (see "Contacting Dell" on page 337 for either the operating system or...complete the boot routine three consecutive times for the same error (see "Contacting Dell" on page 337 for more details. ALERT! Replace the CPU fan (see the Service Manual for assistance). H A R D - Possible motherboard failure or RTC battery low. Replace the battery (see the documentation shipped with ...
... see the documentation for assistance). System Messages for Desktop Computers NOTE: If the message you can use the status of the lights to help identify the problem. Possible HDD failure during HDD boot test (see "Contacting Dell" on page 337 for either the operating system or...complete the boot routine three consecutive times for the same error (see "Contacting Dell" on page 337 for more details. ALERT! Replace the CPU fan (see the Service Manual for assistance). H A R D - Possible motherboard failure or RTC battery low. Replace the battery (see the documentation shipped with ...