Get the error codes and send it to our technical support (osdeployer-support@manageengine.com) to track the issue.
Ensure that the ManageEngine PXE Server is started. If you are unable to start it, then try restarting the ManageEngine OS Deployer OS Deploy Server.
This may occur when the issue is
If the SATA operation mode is set to RAID, then switch to AHCI or IDE.
This error indicates that at least 512 kb of conventional memory is required. In the computer BIOS, change the SATA operation mode from RAID to any other mode. As a workaround, you can also use Bootable Media to boot the machine instead of ManageEngine PXE Server.
If the problem persists, contact osdeployer-support@manageengine.com
To know more about PXE boot server, click here.