tackaholic

I have a Sony Vaio Model PCG-792L. I have not had any problems with the computer until about two weeks ago. I went to start it up and nothing happened. I figured the battery was dead. So I plugged it in and stried again. Still nothing. I removed the battery and left it plugged in and presto it started up. I went to put the battery back in and got an error that the battery was not replaced correctly or the battery is not compatible with my computer. This is the original battery that came with the computer. I shut down the computer and removed the batter and put it back in. The computer wouldn't start up again. I removed the battery and it started up again. So now I can't use my computer with the battery in it. Since I am sure I am like most people and don't really want to get a new computer because if it I have taped the power cord to the computer. Please I need help...