  It found bootable media and is trying to boot from it. It appears that the boot loader is not initializing properly. I would suggest reformatting and reinstalling the operating system again. The issue does not appear hardware related. You may want to try a different version of Ubuntu. Thanks
I recently got a used PowerEdge 1850 (BIOS version A04) without an OS, with plans to install Ubunutu Server. I read that you can boot from a USB flash drive to it, so I used a tool to make an 8 GB USB 2.0 flash drive bootable to install the OS. I set the USB drive emulation to auto, and the USB controller to On with BIOS Support. In the boot order, floppy-emulated USB drive was set to top priority. The flash drive was plugged into the front-right USB port, with a keyboard in the front-left, if that matters. When I turn it on with this all set up, once it reaches the final line ("Press CTRL-E to enter BMC setup within 5 seconds," without any flash drive it just says "No boot device available" at this point), it doesn't do anything. It just stays on an empty line, no error or anything. I know it didn't freeze because the underscore is flashing. Pressing any key will cause a single beep, even F2 to enter the BIOS setup. There is a 73 GB HDD in Slot 0 (left), nothing in Slot 1 (right), and 4 GB RAM. No hardware inside has been changed. Does anyone know what I'm doing wrong? If I just have something set wrong, can someone give me step-by-step instructions from scratch (i.e. a blank flash drive/CD and the downloaded ISO), or at least point me in the right direction to set up the flash drive properly if that's the problem? EDIT: All is going good. Ignore my next post in the thread. I'll post if any new complications arise.
How to install Ubuntu to PowerEdge 1850 - Update: Installed, but not booting?