Help in resetting an HP-50G

[Namir]

(09-26-2020 03:37 AM)Joe Horn Wrote:  My guess is that the problem is not in the SD card. It's a takeover library of some kind in Port 1 or Port 2.

If you hold down the backspace key DURING a warmstart, it will prevent all the libraries from attaching themselves. This is a great way to keep a library in Port 1 or Port 2 from taking over your 50g, after which you can delete it using the FILER.

Method: With the calculator turned on, press and hold down the ON key, then tap and release the C (F3) key. Next, in very rapid succession, release the ON key and then immediately press and hold down the backspace key. Continue holding it down until the warmstart finishes. Press right-shift 2 (LIB) and look at the menu area. If you see no libraries listed, it was a success, so press left-shift APPS (FILES) and begin deleting what's in HOME and ports 0, 1, and 2. However, if you saw any libraries in the menu area, then you were not holding down the backspace key throughout the warmstart.

Joe,

I had the calculator packed ready to return it. I decided to try your instructions. You sir are a WINNER!!!! Your instructions were spot on. I was able to get to the files of the Survey software and delete all the files. Now the 50G wakes up like a normal machine!!

Thanks thanks thanks ... Merci ... Danke ... Gratzi .. Shukran .... Teshekur!!!!

The whole thing makes sense to me now ... it took a Catholic priest to help perform exorcism of evil software that took over a machine!!!

Thanks you everyone for your feedback and suggestions.

Namir