System Failure (907)

I think that refers to an RTC error (real time clock).  I copied these from another answer.  It might help you get in to reset the clock.

try passcodes

Static passcodes

Covidien Master Code                          1287
Service Mode Password setting            6290
Covidien Service Password Setting      1309

DEFAULT     PASSCODES    

Homecare Password setting                                  1111
Homecare/Sleep to Standard Password setting    2222
Sleep study Password Setting                               1212

Problem still persists 

Error 907 still persists 

Error 907  is real time clock, internal battery is dead. Not the main battery kind of like a CMOS battery

It's usually the coin cell battery that needs to be replaced. There is a little compartment under the batteries. Some editions of the PM10N do not have a CC battery in a small compartment. With those models it's located on the main board, which you will need to remove to access.

When you change the CR1220, you need to enter in the service menu and clear all errors then reboot the equipment and the error no appears.

Thank you guys for the help!