The PXE message is not an error.  If you look at the boot order in the BIOS, the system will try to boot to the hard drive/operating system first.  If it can't find anything bootable on the hard drive, it goes to the next device in the boot order.  Eventually, you will get to the network card as a boot option.  NIC's use a protocol called PXE to boot to devices over the network.  You obviously don't have a PXE server on the network, so that boot option also fails. To boot to SBUU, you must set the boot order to enable CD/DVD in the boot sequence.  You must also have created the SBUU DVD correctly. What version of SBUU are you using?Did you download/create it, or are you using the DVD that came with the system?
Currently working on Dell power edge T420. its a new server.I accidental deleted the raid 0. when trying to clear the foreign. Now the try to rebuild the system using the systems built and update disk to configure the raid again. after creating the raid and reboot. it gives an error stating..PxeE 61 media test filler. Please help um stuck. this my first Dell server configuration.
Pxe E61 media test failure check cable