There are several ways to erase the contents of a hard drive. But the technique you use will depend on what you want to use the hard drive for afterwards. For instance, if you just plan on reinstalling Windows, it isn’t necessary to do a Department of Defense level shredding of your data
Erase your hard drive for reinstalling Windows
In newer versions of Windows, you can simply boot to the Windows CD and during the setup process, tell Windows to delete the current partition and install on the new partition. This will wipe out what you already had and replace it with a fresh, shiny Windows installation. Brand name computers–such as Dell, HP, Compaq and Sony—will ship with a recovery disk. You can use that recovery disk in place of a Windows CD to format and reinstall automatically.
Erase you hard drive and sell it on Ebay
If you plan on selling the computer or hard drive on Ebay or even at a yard sale, you must use a shredding utility that will thoroughly erase the data on the hard drive. Actually, these programs write 1s and 0s over every sector of the hard drive several times so the data that had been there is most certainly gone forever. You can then reinstall Windows, if you wish. The problem with the first method is that even though the drive has been formatted, there are tools available that can recover the data that had been erased. Using a program like Darik’s Boot and Nuke (or DBaN) will make that data unrecoverable.
Discarding a dead hard drive
If your computer has failed and the hard drive is no good, you must destroy the hard drive before tossing it in the trash. Sophisticated tools can be used to recover the data on hard drives that no longer work. If you plan on recycling the computer or putting it in the landfill (shame on you), you have to remove the drive and carefully destroy it by whatever means necessary. You can remove the platters by opening the hard drive shell. Whether you plan on drilling holes in it, smashing it with a hammer or driving over it with your car, be sure to wear protective goggles and gloves.
So there are different reasons for erasing your hard drive and different methods based on those reasons. You can find hard drive utilities on our Software Downloads section or contact us on our forums for more advice on how to handle data on your hard drive.
Learn how to reset or restart iPod following a freeze. Tip: Check out this helpful movie too.
If you have an iPod shuffle, click here for reset steps. If you have an iPod touch, see this document.
Important: If your iPod is frozen or won’t turn on, it may be because iPod is paused or the Hold switch is in the locked position. If so, a lock symbol appears on the screen. Slide the Hold switch to the unlocked position and check the screen.
"If the iPod displays shows any of the following messages you should eject the iPod from within iTunes instead of resetting it:"
Connected. Eject before disconnecting
Sync in Progress. Please wait…
Do not disconnect
If your iPod is frozen or won’t turn on, the steps to reset it vary by model. You can easily tell which iPod model you have if you’re not sure.
To reset an iPod with a Click Wheel, including:
iPod nano (3rd generation)
iPod classic
iPod (5th generation)
iPod nano (2nd generation)
iPod nano
iPod with color display (iPod photo)
iPod (Click Wheel)
iPod mini
iPod mini (2nd generation)
Toggle the Hold switch on and off. (Slide it to Hold, then turn it off again.)
Press and hold the Menu and Center (Select) buttons simultaneously until the Apple logo appears, about 6 to 8 seconds. You may need to repeat this step.
Tip: If you are having difficulty resetting your iPod, set it on a flat surface. Make sure the finger pressing the Select button is not touching any part of the click wheel. Also make sure that you are pressing the Menu button toward the outside of the click wheel, and not near the center.
If the above steps did not work, try connecting iPod to a power adapter and plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure the computer is turned on and isn’t set to go to sleep.
To reset iPod, iPod (scroll wheel), iPod (touch wheel), and iPod (dock connector)
Toggle the Hold switch on and off. (Slide it to Hold, then turn it off again.)
Press and hold the Play/Pause and Menu buttons simultaneously until the Apple/iPod logo appears, about 6 to 8 seconds. You may need to repeat this step.
If the above steps did not work, try connecting iPod to a power adapter and plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure the computer is turned on and isn’t set to go to sleep.
If you are still unable to reset your iPod, use only one finger from one hand to press the Center (Select) button, and one finger from the other hand to press the Menu button.
When you reset iPod all your music and files are saved, but some customized settings may be lost. Date and time is preserved (unless the iPod reset itself because it had no power and then was reconnected to power). Other customized settings, such as Bookmarks, On-The-Go Playlists, Shuffle, Backlight timer, and so forth are preserved from the last time the hard drive turned on.
iPod not responding
If your iPod does not respond to these steps, see additional steps in the "iPod troubleshooting basics and service FAQ".
Additional Information
Apple releases new versions of the iPod Software Update application from time to time. These later versions may include new functions or improvements to existing features. Learn about updating iPod’s software.
To return iPod to its original factory settings, use the iPod Software Updater utility to restore iPod.
virus can really cause damages
Nowadays virus can really cause damages to cellpones, especially on BB5 handsets.
Below are the referrences of Virus Symptoms On (mostly Nokia) Cellpones & Software Troubleshooting due virus to infections:
1- Blinking Only when trying to power on
2- Auto Reboot
3- Cannot Send SMS
4- Excessive Load Consumption
5- Cannot Open/Play files
6- Corrupted Phonebook
7- Contact Retailer (some may not be virus related)
8- Cannot delete data from sent/inbox folders
9- Memory Full (always)
Solution:
1- Hard Reset
2- Full Reprogramming
When dismantling any phone, great care should be taken to ensure that no damage is caused to any of the parts. Rough handling may result in severe damage of many parts, and if proper anti-static procedures are not followed, electrostatic damage may result in any electronic component.
Before commencing, it is recommended that the correct tools are purchased for the job in hand - at the very least, you will require a Torx T6 screwdriver..
Step 1. Protect the display with a film to prevent damage.

Step 2. Remove the battery cover.

Step 3. Place a plastic shim between the fascia and chassis and release the four clips indicated below. Turn the handset over and lift the fascia away.

Step 4. Remove key mat.

Step 5. Protect the screen with a film or similar.

Step 6. Also protect the inside if the screen window.

Step 7. Remove the MMC card door.

Step 8. Insert your shim between the aerial cover and the chassis and release all clips to remove the cover.
Formatting the phone on power-on is only supported by some headsets, including all Nokia Series 60 2.0 and newer smartphones (Nokia 6600 and up). Older phones like 7650 or 3650, or Series 60 smartphones from other manufacturers (e.g. Sendo X) do not support this function.
To format a phone on power on (useful for phones which are unable to boot the system) turn phone off, press and hold the green (talk) key on the left + number 3 on the keypad + the * key and then turn the phone back on.
Warning: formatting the internal drive results in ALL DATA being removed. Use this only when you experience serious problems with your device. Do not touch anything during the process! It is recommended to only do it with fully charged battery and your phone connected to a charger to ensure that your battery doesn’t run out of juice in the middle of formatting.
1-TX(that mean trasmiter)
2-RX(that mean receiver)
3-when i understand that is rx and tx problem???
3/1The most problems of TX are(when you power on the phone, signal is well but..before the light is off, signal shut down
3/2 The most problems of RX are (when you switch on the phone and you have not signal
I DONT KNOW IF YOU UNDERSTAND THE DIFERENCE OF 2 CAUSES?
ANYWAY THESE ARE IN GENERAL
4- Whitch parts of nokia are RX and TX?
4/1- PA (power amplificator)is only TX(trasmiter)
4/2- DUBLEXER is RX and TX too
PA AND DUBLEXER EXEPT THE SIGNAL THEY CAUSE MOST OF
PROBLEMS WHEN NOKIA SHUT DAWN WHEN MAKE A CALL
4/3 HAGAR -is RX and have a little part of TX but 80% of received signal is hagar
4/4 COBBA is TX and a little RX but cobba cause most of contact service in nokia and when you listen bad in earphone
4/5 32.768 KHZ REAL TIME CLOCK cause too much problems of signal and when the phone shut dawn inormaly you must listen the ring of the phone if it is too slowly 32.768khz must be change
4/6 CCONTI TRASMIT ELECTRICITY ALL NOKIA PARTS most of problems when the phone not swhitch on the problem is cconti
4/7 FLASH IC cause most of contact service in nokia and signal ( when you switch on the phone and you have not signal but only the name operator example ( like only vodafone but nothink signal) is a flash problem
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