Acer Aspire 5024WLMi Beep on Windows startup

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 Hi everyone,

I have a problem with may notebook. I have bought it a week ago, installed
Windows XP Professional with all the needed drivers. Three days ago the
problem with a single beep started. After my Windows load to the moment
after "The Welcome Screen" and when I can choose which user will login,
after pressing on the user's picture notebook gives a single loud and
annoying beep. After I heard the beep for the first time I have restared my
computer few times and there was no beep upon the startup. The second day
when I turn on my notebook for the first time the beep sounded again. That
day I turned on/off and restarted notebook for several times but there was
no beep. And today again, upon the first startup there was a mysterious
beep. Where is the problem? Could it be the problem with my windows
installation or it could be a hardware issue? What should I do while my
computer is still under warrenty? Should I wait to see wheater the problem
will persist or should I return it and ask to replace it with a new one?

Many thanks!

P.S. Sorry about my english, I'm from Croatia

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