How to Restore Your iPhone After Jailbreaking Fails

Charge the iPhone for 30 minutes. A computer or iPhone charger can be used to charge the device.
Turn the iPhone off or hold down 'Home' and 'Power' on the phone until it powers down.
Connect an iPhone/iPod USB cable to a computer that has iTunes installed on it. Do not connect to the phone yet.
Open iTunes on the computer.
Hold down the phone's 'Home' button. Then, connect the iPhone to the iPhone/iPod USB cable. Keep holding 'Home' until a 'Connect to iTunes' screen appears on the phone. A dialog box opens inside of iTunes. Click 'OK' in this box.
Click the iPhone menu in the iTunes Source Pane, which is under 'Devices.' Then, click the 'Summary' tab in iTunes.
Click 'Restore' inside iTunes. A small box appears. Click 'Restore' inside this box. The iTunes Software goes into 'Restore' mode. Follow the instructions inside iTunes to restore your iPhone to your preferences (via a previous iPhone backup, with or without a software update, etc.).
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How to Fix a Laptop That Makes a Clicking Noise

Insert a CD or DVD into the optical disk drive to determine if the drive is making the clicking noise. Power the computer off and on to determine if the noise persists while the computer is turned off, or if the noise only occurs while the computer powers up or runs.
Remove any CD or DVD from the disk drive. If the computer makes a clicking sound only when reading from the disk drive, the disk itself may be the problem or the drive may be bad. Insert a different DVD or CD in the drive. If the noise continues, replace the drive or take the computer to a repair shop.
Remove the laptop from any uneven surface. If the surface is not level, the hard drive may not function properly and produce a clicking noise. Place the computer on a level surface and restart it to check that the clicking noise is gone.
Back up any important information from your hard drive onto a CD or external hard drive. If the clicking sound is coming from your hard drive, the drive may be going bad. Back up your important information while the drive is still working. Take the computer to a professional computer repair store to determine if you need to replace your hard drive.
Replace the hard drive if the drive makes a clicking sound because it no longer functions properly. Take the computer to a repair shop or send it to the manufacturer to replace the hard drive. If you have the expertise, you can purchase a new hard drive and replace it yourself. Consult your laptop owner's manual before attempting any repairs.
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How to Hard Reset a Mac Mini Computer (9 Steps)

Locate the power button, installed on the left side of the rear panel.
Depress the power button until the computer powers down.
Press the power button again to restart the computer.
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