Hi,
we have a general way to solve problem yourself.
Firstly, note two things while facing a probem:
1. status of Cross Hair LOGO (color / stable or breathing)
2. times of the beep in one cycle
Secondly, read the "CrossHair Warning and Solution" document in this topic
http://www.reasnow.com/forum/index.php?topic=1432.0you can find the reason of your problem and the solution to solve it.
Your problem, 4 beeps and no light, means a "Boot Error",
you need to repaid the firmare by following
"4.2 Repair firmware in REPAIR MODE" in "CrossHair-UserManual-V4.0.pdf"
Please use our latst version: Download Cross Hair Manager V1.43.1
which can be downloaded herer:
http://www.reasnow.com/forum/index.php?topic=25.0