well you can have a read over this.
http://www.robinhoodsplayground.com/for ... =101&t=129" onclick="window.open(this.href);return false;
but you will find that we are not sure what a e73 is.
give us more info.
what happened right before it gave you the error code.
i would just try a the basic stuff.
replace cables,power brick all the easy stuff.