RE: Dell t5500 workstation diagnostics lights 2 3 4 blinking no display

Hi DAMIANA86,

Thank you for writing to Dell Community Forum.

What is the led status on the power supply unit found at the back of the system?

Most of the troubleshooting steps indicate an issue with the motherboard.

Please private message us the service tag of the system along with the result from the above step.

Regards,
DELL-Akshatha M
Social Media and Community Professional
#IWork4Dell

DELL-Akshatha M
Social Media Support
#IWork4Dell
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