I have PowerEdge T110 ii working perfectly , I noticed yesterday that an Amber light blinking

on the front panel . I turned it off and looked inside ; every thing seemed to be good .

Now it does not able to boot , I have now the error blinking numbers 1 3 4 along side the amber light blinking .....

What should I do ? How can I define what part of hardware or panel resource has a problem ?

Best Regards .