hmm, so you are working fine now or it still doesn’t allow you to register/deploy/etc? The issue you just mentioned where you would select an item and then it would go right back to the menu is exactly what I was seeing for most menu options on a particular dell laptop (E5420). The menu options for loading iso’s would start to load and then either go back to the menu or occasionally give me some memory error. I had 4GB of memory installed and the ISO was only around 100MB so I knew it couldn’t be a lack of memory and I tried different sticks and putting it in a different slot (ironically all the memory for these laptops was installed in slot 2 and slot 1 was empty). After trying different kernels/pxelinux/memdisk versions I stumbled across a different BIOS version on Dell’s website listed for the model and that worked. The PITA is that the version was newer (A09) than what they had listed in the downloads section for the laptop, I had to click A08 and then another link listing other versions to see the latest which worked like a charm.
F