Pentax Optio 550 error-message

Can anyone tell me what could it mean that my camera is giving the following message: system error 86.
The camera is a Pentax Optio 550, and I have no idea what the problem could be...
The display doesn't open normally. I can get it to open if I choose the sound mode. Once I could browse the taken pictures, but I can't even get to that anymore..
I'm very greatful if someone knows something, I'm afraid that when I take to a repairshop what it will cost...
Thank You!

Ring Pentax and ask.

If you're in the UK, this is the number:

01753 792731

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