hp presario cq60 a loud beeping sound when truning on computer then stop s and then starts loading

then it may or may not scrool down on scrool bar o the sound last for a 1 min or 2min ,if i hit the esc botton it stop with in a few secound after that ,i have vista ,i reloaded it with my copy disks it did not help ,when it the PC warm up it work ok ,so when i shut it down and restart it will all ways do the  beeping sound ? i trier the taking the battery out  and doing the un plug and hold down the power botton for 15 secound s and plug in and hold down power botton again ,that work for a while ,but then it started acting up again