panic(cpu 0 caller 0xffffff800a7ff085)

Did you see the words Safe Mode on the screen?

Did it spend five minutes and repair the disk first?

1) First, use Disk Utility to Repair/First Aid your drive.

Since your Mac is not working normally, you can invoke Recovery Mode by holding Command-R at Startup.

Recovery Mode contains several useful functions, including a special version of Disk Utility that does not need the rest of MacOS to be running to do its job of repairing your disk.

"Regular" Recovery gets the Utilities from special partition on your normal boot drive. If you see a spinning globe, you have invoked (or fallen back to) Internet Recovery, and you see the Globe because it is fetching the Utilities from the Internet. This takes a little longer, so be patient.

About macOS Recovery - Apple Support

Once you get Disk Utility running, this article describes how to repair your disk:

Repair a disk using Disk Utility on Mac - Apple Support

Once Disk Utility reports your drive has been successfully repaired, you can try booting MacOS in the regular way. If that works, you have fixed the problems and you are done.

--------

If Disk Utility made some repairs, but there are still some problems remaining, you should run it again until your drive comes clean, or Disk Utility reports it cannot be repaired.

If disk Utility suggests you should ERASE your drive, that is a radical step -- this will delete all your files with no possible way of recovering them. Post back here for additional options before you do that.

2) Second re-Install-in-place.

Your MacOS is likely damaged. It is very difficult to repair the individual pieces, so it will need to be re-installed. You can only Re-install onto drive that is working correctly. If Disk Utility was not able to fix all the problems on your drive, there is no point in attempting a re-Install. the drive must be fixed first.

By design, a Re-install-in-place does not bulk-erase anything outside of System directories. Your added Applications, Preferences, and User Files are not modified.

You can do this directly from Recovery mode. The software for the Installation will be downloaded from the Internet. This may take an hour or more. Then it will need to be installed, which may take an hour or more.

How to reinstall macOS - Apple Support

.

Try restarting in Safe Mode (hold shift at startup). This does a five-minute disk check, then loads MacOS with a minimal set of Apple-only Extensions, not including graphics acceleration. You will need your userID and password to proceed. Screen updates will be wonky and slow, but ultimately correct.

When you restart into normal mode, it will take slightly longer, because some catches are rebuilt, including the kernel extensions cache.

Since kernel extension cache problems is why yours died, it may work better after that rebuild.

In Internet Recovery, these low negative thousands error messages indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.

Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]

If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.

The higher the number, the more obscure the problem.

Also, make certain the Date&Time and Time Zone are correct within 5 minutes.

ALSO: Internet recovery does not use your drive. It creates a dozen or more RAM disks for its temp files. If it has not said it is starting to download your new MacOS, it does not care if your disk blew up, or you removed it entirely.