Hello, dear.
When you get the winload.efi error message, which indicates that the winload.efi file of the operating system is damaged or lost.
You can do as follows to recovery the issue:
1. Download the Easy Recovery
2. Create a USB flash drive initiator and save the easy recovery software to the USB flash drive.
3. Insert the USB flash drive and boot from the USB flash drive.
4. Use the esay recovery to fix the problem.
After that, restart the server.