Bluetooth mouse, keyboard and trackpad suddenly stopped working

So this morning I came home from shift ( I'm a firefighter ) woke up my iMac and the wireless mouse would not respond not the keyboard. I pushed rear button for restart with it did the got this grey screen for which seemed like a eternity it finally booted up but still not devices detected on BT. I can even select BT to turn off. So I did some research and had to make a trip to staples to get an F**ing keyboard and I have done everything I could find on this sight to fix this issue. Here is a list.

Deleted Bluetooth.plist and plist.lockfile

restarted several times

Safe boot

repaired disk permissions

verified

new battery in all devices

reset SMC

reset PRAM

unplugged all USB devices

*** else can I do. This is really ******* me off!!

iMac mid 2011 21.5 "

running 10.10.4

2.7 intel i5 12 G RAM

The real crazy thing is that I upgraded to 10.10.4 a while ago and things have worked just fine up until 24 hrs ago.

My old white iMac (yes I still have it) was able to discover both mouse and keyboard in seconds.

Somebody please help