Complaint about Alienware Aurora R10

I am writing to formally complain regarding an Alienware system R10 Ryzen Edition that has been faulty since purchase. <Invoiced on July 18, 2021. Purchased warranty expired 3 years/5 months/5 days ago on July 19, 2022. DELL-Admin>

My attempts to troubleshoot have resulted in the permanent locking (damage) of two additional retail CPUs due to an undisclosed "Platform Secure Boot" (PSB) feature. This proprietary lock was not advertised at the point of sale and has rendered my personal property useless outside this system.

I am seeking a resolution regarding the original defective unit and compensation for the damaged components under the UK Consumer Rights Act 2015.

Please advise on the escalation process to the Executive Support team.

Service Tag: [Available on request].