It's looking for a Boot Disk. For some reason the computer can't find an operating system. Either your HD is dying or has died or the HD got corrupted. Boot into your MacOS installer DVD and see if you can "Repair disk" and see if that helps if not then you may have to buy DiskWarrior or similar disk repair program to save it.
You did back up your disk didn't you?
Click it, if you have a question.
Click the link I will post for your answer.
What looks like a question mark is actually a low fuel warning light . It is a poor resemblance to a fuel nozzle .
do you mean the mail box.......if you do that means that you have mail!
The blinking folder icon with a question mark indicates that the Mac could not find a System Folder from which it could start up.
I have not the slightest idea, but my suggestion is to go to the Apple Troubleshooting thing.
they have a black hat, with a white bit on the front and a blue question mark
The symbol for a question mark is simply called a "question mark."
Question Mark ? is a question mark.
After the question mark.
?
Mark Twain was white.