Hi Brendan Tobin,
Thank you for reaching Microsoft Community. II am aware of how frustrating it may be to have a Surface screen cracking issue even when the device hasn't been dropped or experienced any other incident that could have led to the problem.
Any surface screen damage is regarded as a hardware failure that cannot be fixed using any troubleshooting instructions. Your Surface device needs a repair. Even though I would much like to assist you with this, there aren't enough tools in the community for us to move forward and provide you the best options. We can assist in the device's software troubleshooting, but any repair or replacement is beyond of our support boundaries here in the community.
We recommend reaching out our live support team to check available options for your device. You may reach them following the instructions below.
- Go to Contact Us - Microsoft Support
- Choose how you would like to get support for your Surface device.
- Type in the problem you need help with.
- Look at any available solutions offered and select Contact Support.
Kind regards,
Lavenia