I'm using win xp sp2 and have just reformatted. But then it my computer will crash/freeze like every hour and becoming more frequent, until recently it will crash every time right after I startup windows when I turn on my PC. Every time right before the crash/freeze occur, I would hear a slight “clicking sound” from my PC, sounded like it’s from the HD not the floppy. Then after I restart, I will get the message “disk boot failure, insert system disk and press enter”. I then check the boot options on my BIOS and notice it isn’t detecting my HD. But my floppy which is what I have set as a priority to boot from is detected. I’ve always had the floppy as the primary boot drive for the past few years and no problem until I recently reformatted. So now I’m just wondering what the problem is? Is it my HD, my operating system or something else?

Thanks in advance.