Are you using SELVIEW to see the full error log or just the BIOS set-up screen?
Bios set-up only displais critical errors. Flashing LED indicates non- critical error.
Most likely you have a fan plugged into the wrong connector or you need to load the FRUSDR code to set the fans.
Current code stack link:
Thanks for your help. When I loaded SELVIEW I found one of my cooler was plugged into incorrect connector. Now it's ok.