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Lets start with the basics.
1. Make sure the power cord to the computer speakers are plugged in. Check at the wall and make sure the power cord is connect to the back of the speaker. If there is a power button make sure it is pressed in the on position. Make sure the volume level is turned up.
2. Check the computer and make sure the sound is not on mute. Turn the volume level up from the computer settings.
3. Try playing some music. If you hear sound you are good to go.
4. If you are not able to hear anything than continue. I would suggest plugging your speakers into you cell phone. Try playing some music from your cell phone.
5. If music plays through the speakers from your cell phone, something is wrong with the computer. If no sound plays with your cell phone then something is wrong with the speakers.
6. If worse comes to worse bring your computer into a computer store. Tell the salesman you want to buy a new set of speakers. You just want to make sure your computer works with the speakers before you buy them.
7. If all else fails, ask a local tech you trust.
If the start up sound plays and the hard drive sounds normal try connecting the computer to an external monitor. If the external monitor shows the desktop just fine then the cable connecting the laptop to its screen is probably going bad.
If the computer will not boot at all try zapping the PRAM by
Pressing the power button and then command-option-p-r before the gray screen comes up.
Hold those keys down until you hear the startup chime.
Let go of the keys and let the Mac reboot.
If that doesn't work try booting from an install disk and run a repair utility.
Clicking Hard drive
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.
You need to replace the hard disk and install Windows and your programs to get a working computer again.
Sounds like your hard disk has failed. First - re-seat the hard disk and reboot the computer. If the computer does not boot up then reboot and go into the BIOS configuration to see if the BIOS detects the hard drive. If it doesn't detect the hard drive then it could be faulty. Then 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.
Are You the Administrator for the System?then go to the folder On the computer it's connected to and run Diagnostics from there, And Or from the control Panel/ Devices/Hardware,Also Right click Computer go to Properties device manager click on Printers if you have a yellow Icon on anypart of that list then y have a software Problem, go to MANUFACTURE Web site and Download the latest sofware for you're machine restart after install and you should Be fine , ALSO DON'T forget to run you're computer tools Like disk clean up and disk defragmenter, to keep you're System in top working order
Try taking out battery and plug in power. If it works, battery is faulty. If not, Try taking out your hard disk plug in power, if it works, hard disk is faulty. If not, Try taking out memory card, if there's a sound, memory card faulty. If no sound, it's your motherboard that is causing the error.
Note: If machine is under warranty no need to pay for the repairs.