My hard drive is not displayed in my computer and a sound like tik tik tik tik comes from inside the drive

This is called the Click of Death. You cannot fix it yourself. Get it to a recovery expert.

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.

sounds like a bad/faulty drive

Its time you backup your data and contact Dell to get your hard drive replaced (in case your computer is in warranty) else order for a new hard drive compatible with your computer.

You will need your Windows CD that came with your computer, if you did not get it contact Dell about the same.

sounds from what i can understand YOU NEED A NEW SATA 2 HDD MY FREIND BUT ANYONRE INFO WOULD HELP

Hello my friend.
This is indicates that you have hardware problem on your disk or is very dirty.
The only think you can try before buy new one is to scan it for errors and and do a defrag.
You go to MY COMPUTER
You select your hardrive LOCAL DISK C: etc
Right click-Properties-Tools Check now(Check for errors) Probaply will ask for a restart to scan it,so do a restart do start scanning your disk
For a defrag you do the same but in Tools you choose Defragment now(defrag now)

Hard disk drive has gone bad. the ticking is the read heads hitting the stops hard. means that the disk might have been dropped.
If the ticking is musical in nature, like a waltz, this is caused by a virus that can activate after april 1st of any year.

Sounds like the HD (Hard drive) has failed you. That's the TICKing sound you hear.Hard drives used to hardly ever fail today its common.You can send the HD off to have the Information saved if its priceless information I would, if not then I would buy a new HD and install it fresh. Go here to view more on the interior of the system....http://ixbtlabs.com/articles2/barebone-asus-digimatrix/

Sounds like bad hard drive. disconnect power from it and see if tik goes away

Acer has the tendancy to blow it's regulator circuit, it makes a fast tik-tik-tik sound, if so, send in for repairs, nothing you can do to fix it. JJ