I was using Picasa to rename a picture file name when suddenly Picasa and Firefox closed and wasn't able to restart. So I shut down the computer completely, using the Start button procedure.

I restarted the computer. Instead of getting to the sign in screen, the screen was black with words that said it wanted to run check disk. When check disk was done, the startup music could be heard but the screen was black. I pushed the start button in and held it, to shut off the computer.

I restarted the computer and check disk ran again. After it was done, I saw the password screen flash by then the screen was black. I typed in my password and the computer started normally.

Next day, I shut off the computer the normal way, Start > arrow over to shut down. When I restarted, check disk wanted to run again, but I pressed a key on the keyboard to cancel it. The puter started up normally.

I'm wondering why the check disk always wants to run and if I can tell it not to every time the computer starts. Can you write a tutorial about the Check Disk?

In XP, I could find Check Disk under Start > My Computer > right click C drive > Properties > Tools tab > Error Checking. I can't find this in Vista.

Thanks