Hdd beeps

Hello,
I'm using HP pavilion dv6700
it worked for a bit more than a year.
today after turning it on it starts to beep, as it trying to access to HDD, than message follows - no OS found.
I hardly launched a live CD with linux, it didnt want to load too, because the HDD was missing, after I changed boot code it worked, but HDD is still not mounted.
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it beeps while accessing the HDD.
worked for a year
HDD running time is bit over 265 days =)
tryed to make an error search on HDD before it happend
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using Windows 7 OS.
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how can i solve my problem?