Macbook Pro won't boot up makes clicking sound

Hi.
After upgrading to Firefox 4 on my 15inch 2006 Macbook Pro, it froze for over 5 minutes and began to make an odd repeated clicking sound. I tried force-quitting, but that wouldn't work, so I restarted it. Now it won't even boot up fully, it just makes a similar odd clicking sound (but not as frequently).
However, the grey Apple screen does appear, along with the revolving wheel. It seems very odd though, as the light at the front of the machine goes out as soon as the machine attempts to restart, which suggests that something physical may have occured to some internal hardware.
I even tried booting up in Safe Mode, but it is no different. Also, Caps lock and Number lock keys both appear to be working, so hopefully the keyboard is still functional.
Does anyone have any ideas what may have happened. My Applecare expired about two years ago, so really need some assistance if possible.
Thanks
George

First try booting from your OS X installer DVD. If the computer boots into the installer then do this:
Repair the Hard Drive and Permissions
After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
After returning to the installer reinstall Snow Leopard. This will not erase the drive. Reinstalling takes from 45 minutes to an hour or so.

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Read this article...
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
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Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
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you want to check how many threads with same question first, and look in
Mac OS version forum that you have; and the notebook MacBook instead of the workstation forum for Mac Pro (non-laptop)
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Mac OS X Help
Isolating Issues in Mac OS
http://support.apple.com/kb/TS1388
https://www.apple.com/support/osx/
https://www.apple.com/support/quickassist/
http://www.apple.com/support/mac101/help/
http://www.apple.com/support/mac101/tour/
Troubleshooting: My computer won't turn on
https://support.apple.com/kb/TS1367
Assume you know what your OS, how to use the Recovery Mode, and how to repair or do Safe boot and other tasks.
General purpose Mac troubleshooting guide: Isolating issues in Mac OS X
Creating a temporary user to isolate user-specific problems: Isolating an issue by using another user account
Identifying resource hogs and other tips: Using Activity Monitor to read System Memory and determine how much RAM is being used
Starting the computer in "safe mode": Mac OS X: What is Safe Boot, Safe Mode?
To identify potential hardware problems: Apple Hardware Test
General Mac maintenance: Tips to keep your Mac in top form
MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
http://www.apple.com/support/macbookpro

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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in safe mode.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
The commands may line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
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Triple-click the line of text below to select it. Copy the selected text to the Clipboard (command-C). Then click anywhere in the Terminal window and paste (command-V).
find /Sy*/L*/Ex* -type f -name Info.plist -exec sh -c '/usr/libexec/PlistBuddy -c "Print :CFBundleIdentifier" "$1" 2> /dev/null | egrep -qv "apple|Accusys|ArcMSR|ATTO|CalDigit|HighPoint|hp-fax|JMicron|print|SoftRAID|stex" && echo ${1%*.kext/*}.kext' {} {} \;
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When I was watching a video on my 15inch macbook pro, the screen suddenly turned black and made the click sound that is usually only present in forced shut down.
I then press the power button once, and nothing happened except for another "click" sound as I pressed the power button.
I tried pressing the power button again, and again, the same thing just kept on happening.
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and can I make it so I can turn it on normally and not hear the loud noises?
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You can try running the Apple Hardware Test by booting holding the D key down.
http://support.apple.com/kb/ht1509

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https://discussions.apple.com/thread/1687899?start=0&tstart=0
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When attempting a normal boot from the internal HD of the Macbook Pro. It will make the happy chime of a successful POST. It will display the Apple logo. And that's as far as she gets.
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Photo of verbose boot:
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Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style
Photos:
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I would try Diskwarrior 4.1 and see if that can repair the drive.
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Macbook Pro won't boot up makes clicking sound

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