glitches when loading

Playful hands are reaching out to write to you, All!
on the calendar Wednesday June 23, 1999, and the rooster crowed: 15:28

Here. I turn on the pros, on the screen there is what I need - the menu
I select SR/M..... the disk spun, the screen went black.... and that's ALL!!! completely stuck!
But! When I select typ DOS and there is a boot floppy disk SR/M in the floppy disk, then the system boots without PROBLEM!!! (SR/M) What is the problem? what could have died on
the board?
But it worked before.... or maybe something happened to the firmware?
Where can I find the firmware for the pros?
Who installed sims from PC 1 meg instead of guns?

Sincerily yours Pavel Hoteev!

Press RESET immediately, Pavel!

23 Jun 99 15:28, Pavel Hoteev wrote to All:

PH> Here. I turn on the pros, on the screen there is what I need - the menu
PH> I select SR/M..... the disk spun up, the screen went black.... and that's it
PH> ALL!!!

The computer is faulty. Turbo mode and extended screen...

Kirill Frolov. [ZX]