Why does it indicate error loading OS file when I switch it ON?

I suggest a hard reboot / initialize. Istructions are in your manual or on the Korg website

You need ton tell us what instrument you're asking about.

Carlos Hi
despues de formatear el equipo todo tiene que volver como recibistes el pa 500 nuevo de fabrica

Hi there's this website something like reliable-store and it is very amazing for manual for repairing servicing anything
someone on fixya recommended it to me and I thank him even today

Unplug the USB cable.
Download correct driverfor your OS from
http://support.casio.com/en/support/download.php?cid=008&pid=20
You need to load the driver first and only plug in the USB cable when the software tells you to do so.

Have you tried it with batteries? Are you sure the power supply is working correctly? It should not need the OS to operate as a keyboard disconnected from the computer.

The cable connection is just a MIDI cable that uses opto-isolators so the 2 items are electrically isolated from each other. The software driver for the Korg should load without problem. The Korg program itself may be looking for inputs that are not there when the keyboard is off and the program itself reaches a stop command.

If the PA80 will not work on just the power supply- the power supply can be the fault- it has an internal fuse. Finding a similar supply with the same coaxial plug wired the same polarity is the way to test it if the battery option is not available.

1. turn your keyboard on
2.hold the intro 1, by turning it on

There are many ways to attempt a fix with this error you could try firsta boot into safe mode then running msconfig

select the diagnostic startup then reboot in the normal way this might enable you to find your error.

If this fails click the LAUNCH SYSTEM RESTORE which maybe able to use one of your restore points created at an earlier time (usually before an app install) this may give you the fix you require.

Korg Pa800 Synthesizer i have noise on ram samples Answer i turned on my pa800 and when i play ram samples there was some noise like cracking and distortion,... (More) i turned on my pa800 and when i play ram samples there was some noise like cracking and distortion, that happened 2 or 3 times, now its normal, but i think it may hapen again??? where is the problem, somebody says it is on motherboard? or its just ram overheating? since i install 2.01 os i noticed that its kinda warm in right display corner, can u help me???

Hi, have you solved this problem yet? If you have, share the solution with us please! :)