I purchased used M450 couple of weeks ago. OS xp professional with new installation - I have updated all drivers and start to get machine work as I will.
Yesterday when I started machine it was one high beep-sound - normal start - and I could work as normally, despite annoying 2 - second beeping from computer speaker all the time??? It happened after every start. I tried to found out what was wrong without luck. I had to give up.
Today I started machine again - and everything worked as it should??? No annoying beeping... I updated graphic-driver to latest version and so far everything is as it should be.
Have anyone an idea - why these rare beepings?