Hello That_guy456, welcome to the Microsoft community, I'll be happy to help you today;
I understand that the computer has crashed in the memory diagnostics;
Are you no longer able to access the system?
If you're not getting it, try the following;
Turn ON the computer and when the manufacturer / Windows logo appears, press and hold the power button to turn it off - Repeat 3 times
Now the computer will go to the recovery environment;
Click Advanced Options > Troubleshooting > Advanced Options > System Restore;
Check to see if there are any restore points you can go back to;
If not possible try the following;
Once again within the recovery environment click Advanced Options > Troubleshooting > Advanced Options > Startup Repair;
Check if the problem is fixed;
I hope I have helped, see you soon!