Sharp Mobilon lock up problem

I have discovered that the white screen of death can be overcome by holding
down Ctrl when turning on.

Turn off using the off button.

Professor Henry Dixon (PHD)

My HC 4600 does not have this problem...well, instead, it
just simply RESET and say bye bye to my docs. It happens
sometimes if ac power is supplied while the HPC turning on.

In Hong Kong, some Sharp HPC user did face your problem.
I heard that this may be caused by the power management
of the machine. Make sure you always have enough batteries
could do some help.

Yes, service pack SP1 has been installed. but Thanks for the tip

I have the same problem with my Australian Sharp 4500A. I also found that,
by pressing the off key firmer when turning off, less chance of freezing the
screen when turned on. However, sometimes it still does. Do not know why
and interested to hear from you later if you solve the problem.

I have the service pack installed. It does not solve the problem.

Have the service pack installed?

I had the "white screen of death" with my 4500. It locked up tighter than a
drum, could not reset it. Sent it back to Sharp for a new screen.