Hello Icarus,   First disconnect any USB drives you may have attached.   If you can get into the LifeCycle Controller (LCC) ,   then try updating the BIOS.  If you cannot get in LCC now then try updating as soon as you can get in. BIOS 2.16.0 [URL]     Try these troubleshooting steps in order checking result after each:   Draining flea power is good first step. See if you used these steps: drain flea power (shut down, disconnect power cables and Network cables, hold in power button 20 seconds with cords removed).  After flea power drain, system has to set for 3 minutes for DRAC to reset without any power plugged in, then plug in NIC and power but wait 2 minutes before power on to give DRAC time to initialize. Check results   Next you can try to clear NVRAM Clear NVRAM - there is a map under the lid to show the jumper location. Shut down,  Set jumper to the Clear position, power on and Post up to the jumper error, shut down and return jumper to original location. Check results       Minimum to post  (this is minimum components to POST, it won't boot, this is to test POST. If successful POST, put things back a little at a time until find faulting component)   The minimum components to allow the PowerEdge R730 to complete POST are:   *System board *One power supply unit *One processor (CPU) in socket CPU1 *One memory module (DIMM) installed in socket A1 *Left control panel (for power button functionality) *One backplane card   Remove anything not on that list: DVD, Hard drives, PERC controller, backplane, network card, NIC cable, any pcie cards, keyboard, mouse, USB devices, ….  anything not on the list remove. Leave the fans installed.   If it does not post then the issue is with one of those components. If you get successful POST, put things back a little at a time until you find the faulting component.    
My working/runing R730 stuck on Initializing firmware interfaces after restart. Server was working prior to that and nothing was changed.  I cannot do anything from this point on. I cannot enter BIOS (F2). I cannot enter Boot Manager (F11). In community I found one sugestion to disconect power cord for 30+ minutes and restart. Unfortunately that did not help either. My current version: BIOS 2.13.0iDRAC w/ LCC 2.82.82.82  I would be pleased of any advice to solve this issue. Please be aware that I am not an IT expert. Thx in advance.
PowerEdge R730 stuck on Initializing firmware interfaces