Ok, Here is the deal: My mom was using our iMac and some how unplugged the power cord from the back of the computer. After plugging the computer back in and turning it on I got an extension conflict error message, after restarting with extensions off I get another error message(invalid address, or address error I don’t remember what it said) and it tells us to restart with extensions off again, trying that I get the same error message and restarting with extensions on I get the original error message again. The computer is a 400Mhz iMac running 9.1, and it is no longer under warranty. Any suggestions on what to do would be much appreciated. Thanks in advance!