Key disabled message - Tally Line Matrix T6050 Printer

With a master PASS-Key III key, turn ON the ignition, with the engine OFF.

IMPORTANT:

This procedure is not available on vehicles equipped with option code (Z49).
If replacing a BCM with an GM SPO replacement part, perform the procedure to setup a new BCM prior to the 30-Minute Relearn Procedure.

Observe the STARTING DISABLED DUE TO THEFT message on the driver information center (DIC), after approximately 10 minutes the STARTING DISABLED DUE TO THEFT message on the DIC will turn off.
Turn OFF the ignition, and wait 5 seconds .
Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes .
With a master PASS-Key III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.

IMPORTANT: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

Strange, I have never seen that message and I have a 2004 and a 2007. On most GMs the system will reset by either using the unlock function on the remote or unlocking the drivers door with the key. If both of those are ineffective, you can probably go thru a key relearn procedure.

STARTING DISABLED REMOVE KEY
Refer to Theft Systems Description and Operation in Theft Deterrent

STARTING DISABLED REMOVE KEY
The radio illuminates the STARTING DISABLED REMOVE KEY message when the VTD system has disabled the starting system. The radio receives a message from the theft deterrent control module via the serial data circuit requesting illumination.

Your best bet have it towed to a qualified repair shop .
The vehicle theft deterrent (VTD) system functions are provided by the theft deterrent control module. When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory, learned key code. If the value is correct the theft deterrent control module sends a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel continue password via the serial data circuit to the Engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The components of the VTD system are as follows:
• Theft deterrent control module
• Engine control module (ECM)
• Ignition key (Transponder)
• Ignition lock cylinder
• Security indicator

Your doing it wrong !
30-Minute Relearn Procedure
Use this procedure after replacing the following components:
?€¢
The passkey III (PK3) keys

?€¢
The BCM

?€¢
The PCM, see important above

Important: This procedure is not available on vehicles equipped with option code (Z49).
If replacing a BCM with an GM SPO Replacement Part, perform the procedure to setup a new BCM prior to the 30-minute relearn procedure.

1. With a master passkey III key, turn ON the ignition, with the engine OFF.
2. Observe the STARTING DISABLED DUE TO THEFT message on the drivers information center (DIC), after approximately 10 minutes the STARTING DISABLED DUE TO THEFT message on the DIC will turn off.
3. Turn OFF the ignition, and wait 5 seconds.
4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

5. With a master passkey III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.
6. With a scan tool, clear any DTCs.

the touchpad can be disabled in the bios.

Aalternatively type up your messages in an email as these are saved instantly as a draft after one stops typing for a moment.

First try another key if you have one.
If that doesn't work then remove the negative wire, wait a few minutes, reconnect and try.
If that doesn't work then you might have broken cable to the ignition switch.

STARTING DISABLED REMOVE KEY
Refer to Theft Systems Description and Operation in Theft Deterrent

STARTING DISABLED REMOVE KEY
The radio illuminates the STARTING DISABLED REMOVE KEY message when the VTD system has disabled the starting system. The radio receives a message from the theft deterrent control module via the serial data circuit requesting illumination.

Your best bet ,take it to Cadillac dealer and have it checked . Could have DTC'S - diagnostic trouble codes
DTC B1015
DTC B1016
DTC B3031
DTC B3055
DTC B3060
DTC B3090
DTC B3935
DTC B3976
DTC P1629
DTC P1630
DTC P1631

The theft deterrent module or the insturment cluster or the ECM is not seeing correct info.
The vehicle theft deterrent (VTD) system functions are provided by the theft deterrent control module. When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent control module. The theft deterrent control module then compares this value to a value stored in memory, learned key code. If the value is correct the theft deterrent control module sends a random generated number to the transponder, this is called a challenge. Both the transponder and the theft deterrent control module perform a calculation on the challenge, if the calculations match the theft deterrent control module sends the fuel continue password via the serial data circuit to the Engine control module (ECM). If either the transponders unique value or the calculation to the challenge is incorrect the theft deterrent control module will send the fuel disable password to the ECM via the serial data circuit. The components of the VTD system are as follows:
• Theft deterrent control module
• Engine control module (ECM)
• Ignition key (Transponder)
• Ignition lock cylinder
• Security indicator

have a look at the F keys - is possible one of those disables the touch pad
you can enable and disable the touchpads Touchpad: - to enable or disable a touch pad/pointing device from the Start Menu > control panel > Change to claasic view - {on left hand menu} click on the mouse icon Mouse Properties dialog box, click "Device Settings tab" select the device click to Enable or Disable OR You may need to enable in the bios/setup menu - as the PC boots - you should get a message on how to get into the bios/setup - usually using F2 or DEL Key or F10 see if touch pad needs to be enabled there OR one of the F keys may disable/enable - depends on the model of the Laptop - toshiba sometime use FN+F9 key

you must drive your vehicle for 40 miles after battery replacementt to reset the system monitors

If you have a key with a resister in it , it may be the ignition cylinder itself. If you do not have a resister in your key , you should check for bad body grounds along the fenders and firewall. You can also try disconnecting the battery negative cable for 20 secs. and retry.