Spilled liquid on PowerBook keyboard 24 hrs ago- have tried to dry out. Computer starts- screen displays flashing file logo with a "?" On...

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Excellent, Sir or Madam. Did this just happen today?

If the question mark appears for only a few seconds

If your Mac displays a flashing question mark for a few moments but then continues to start up, you might need to reselect your startup disk in System Preferences.

1. Choose System Preferences from the Apple menu (), then click Startup Disk.
2. Click the icon of the disk you normally use to start up your computer. It's usually named Macintosh HD.
3. Close the System Preferences window.

Your Mac should now start up without the flashing question mark.

Yes Ms. Robin.

Have you tried the steps below yet?

Sorry to hear that. I was once was given a Laptop that was soaked with Champagne to keep. I had to have the Mother Board replaced along with the keyboard.

yay.... Or is it a YAY!!!! Working now?

Well, it is now working, albeit must be Setup as if new. 

Acceptable, Robin?

Did you not set that up?

To be clear, what is now happening?

Rebooted and??

Now calling you.

Thank you for allowing me to resolve your issue.