Joey writes in with a Windows question:
Q. I want to ask now when I start up my computer, I never hear a beep sound from my motherboard. Is any thing wrong and I also log in my windows starting also no music played out... but there is sound and windows seem to work normal. Did I do anything wrong?
Answer: The beep you hear when you start your computer usually comes from the case speaker which is wired to the motherboard. If you find the small speaker inside the case you can follow the wire back to the motherboard to see if it has become disconnected. There could also be a slight chance that the speaker or the connection on the motherboard has gone bad. There is also an option within Windows to disable your internal speaker. Check this page for details.
For your windows login sounds check the Sounds and Audio Devices applet in Control Panel and then go to the Sounds tab and make sure the correct sound is still associated with the Windows logon. You can also find the name of the wav file there and make sure it is still in your C:\Windows\Media folder and try and play it by double clicking the file to see if it works. It may be corrupted. The file is called Windows XP Startup.wav.