Your PC contains a special security chip called a Trusted Platform Module or TPM. To proceed, you must first enable it, or turn it on, through the PC's BIOS Setup program.
Here's an example of enabling a TPM through a PC's BIOS Setup program*:
1.   Reboot the computer and enter the system Setup program
  by pressing the [F2] key during startup (or during the
  Power On Self Test process).
2.   In the Setup program, open the "Security" settings category
  and select the "TPM Security" menu option.
3.   Set the TPM Security state to "On" or "Enabled".
4.   Exit from the Setup program by pressing the [Esc] key, and
  when prompted choose the "Save / Exit" option in order to
  keep the changes.
 
Press Cancel to exit and complete this step. Upon reboot, this wizard will restart.
 
*Note: This is an example. Please refer to the PC manufacturer documentation for specific details for your PC.