On Dec 5, 8:24 am, "John B. Coarsey, PE" <jcoarsey<nospam>@yahoo.com>
Do you have an SD card installed? It can cause this behaviour. I had
the same problem with my 2790b. I upgraded the ROM to the latest
version which was supposed to fix the problem; it did not. I sent it
in to HP. They could not find a problem but they also reflashed the
ROM to the latest version. The problem persisted. I finally removed
the SD card, bought a larger CF card to hold the extra data and have
not had a problem in the several months since.