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Code Cause 1-1-2 Microprocessor register failure 1-1-3 NVRAM 1-1-4 ROM BIOS checksum failure 1-2-1 Programmable interval timer 1-2-2 DMA initialization failure 1-2-3 DMA page register read/write failure 3-1-1 Slave DMA register failure 3-1-2 Master DMA register failure 3-1-3 Master interrupt mask register failure
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the closer I could get in term of voltage rating is 14. In this helpful video, we show how I fixed the issue for my Dell Optiplex desktop. Blinking orange power light indicates a failing or failed PSU. l Yellow ² A good connection exists between a 1000 -Mbps I've had my Acer Aspire 3 laptop for about a year now, never had any problems so far. 0 Connectors (4) 4 Microphone Connector 9 Drive Activity Light 5 Diagnostic Lights (4) BACK VIEW 10 Power Supply Diagnostic Light Hi Jenne106, and welcome to the Lenovo User Community! Those symptoms would suggest that your computer is plugged in to the USB-C port on the front of the dock. Scroll to pages 36-38 in the - Dell Optiplex GX620 Dell OptiPlex 755.