Hi @JamieSherriff
Welcome to the HP Forums!
I appreciate you taking the time to share your concern and thank you for using this forum, it is a great place to find answers.
I reviewed your post and I understand that you are having issues with the CPU on the computer.
I’d love to help!
If the CPU is failed, you need to replace it. I recommend you to contact phone support to check the available service options for your computer.
Follow below steps to contact phone support.
Step 1. Open link: www.hp.com/contacthp/
Step 2. Enter Product number or select to auto detect
Step 3. Scroll down to "Still need help? Complete the form to select your contact options"
Step 4. Scroll down and click on HP contact options - click on Get phone number
Hope that answers your question and you have a great day!
If the information I've provided was helpful, please give us some reinforcement by clicking the "Accepted Solution" and "Kudos" buttons, that’ll help us and others see that we’ve got the answers!
Take care!
Cheers!
The_Fossette
I am an HP Employee