My hitachi hard drive Hitachi HDT721064SLA380 isn't detected by computer and i can here a sound "tic tic" in the HDD ,Thanks .

Have you put the hdd from the laptop into slave mode, its on the back of the hdd, there might be a "jumper" that you need to reposition, failing that only insert the 1 hdd from the laptop and make it the only hdd, it should have an operating system on to run as normal. You can see the <jumper> on the right of this picture, you will need to connect both teminals (slave) with a little plastic jumper.

The clicking noise is commonly known as the "click of death" on a hard drive. The hard drive is faulty and the clicking noise is the read/write heads clicking back and forth.
The hard drive needsto be replaced in the computer/laptop, Windows installed and the computer orlaptop's device drivers plus your programs etc. to get a functioningcomputer/laptop again.

The tic tic tic noise is known as the tic of death. This hard drive is faulty especially when you go into the BIOS and the hard disk is not detected. This is why when you try to install Windows it cannot detect a hard disk.
The hard drive needs to be replaced in the computer/laptop, Windows installed and the computer or laptop's device drivers plus your programs etc. to get a functioning computer/laptop again.

As the error says, the 3rd slave hard disk (which one depends on how you have connected them - most likely the Samsung) isn't responding in a timely manner to the commands coming from the southbridge. Because of the miscommunication, the master disk on the same cable (the Hitachi) can also fail the recognition, even if there is nothing wrong with it.
This is a hardware defect: that disk is dying and there is nothing you can do to fix it. Just take out all your information out of it and remove it from the pc permanently

When a hard disk makes a clicking sound and the computer does not detect it then the hard disk is faulty. This is commonly known as "The click of death".
There is no way of fixing this hard drive, if you need to recover your data, then there are companies that can recover data off faulty hard drives BUT it will cost you an arm and a leg for their services.

maybe its in the bios settings that set to first boot was your external hdd,,,open bios settings and set first boot to harddisk drive,to boot your primary hdd so your external will be now detect

Yes it is possible to data recover from this hard disk to using "active partetion recover v2.0 or above" software. This software should be registered and also bootable disk. It will be possible to data recover, if it will be detect in dos mode.

Procedure:
Insert the bootable disk into CD-Rom and choose boot from the cd rom and now check your disk is detected or not, if detected follow the instruction and your all data could be recover with your complete partions.

Good Luck

Sounds as if your hard disc is failing

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Thanks

firstly check your cable connections, then log onto your bios setup menu during startup and check whether the Hard drive is detected by your bios, if it is then you can try to format the harddrive using the ntfs system (use the long formatt) if you are using windows xp or later if using any earlier os then formatt with the FAT32 system.
If your HDD is not detected by the bios then try to download bios updates for your motherboard and install thed in windows. is this does not work then its time to get a new HDD. thanks