diff --git a/Troubleshooting.md b/Troubleshooting.md
index 4295baa..2f38ff2 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -3,6 +3,9 @@
 Yes that is a lot of text below, because it covers most cases of issues we've seen! Here is the TL:DR version which you should do before asking for help (or we'll just refer you back to this!)
 
 * Check for any known issues or gotchas on the [Supported Systems ](https://github.com/erichelgeson/BlueSCSI/wiki/Supported-Systems)page.
+* If you are seeing the LED flash in a repeating pattern it is an error code: 
+  - 3x flashes means no image found - check the [usage page](https://github.com/erichelgeson/BlueSCSI/wiki/Usage) for naming conventions.
+  - 5x flashes means no SD card found - clean the SD Card and reformat with the SD Memory Card Formatter
 * Format with [SD Memory Card Formatter](https://www.sdcard.org/downloads/formatter/) Chose the "Overwrite format" option.
 * Power the device via USB.
 * Use only ONE image on the SD card, Use one from the Mega drive under the Usage page.