My first guess would be a bad switch.
Yes, it will just take a while!
Cold booting occurs when the electrical power (the switch button) on the system unit is turned and warm booting occurs when the computer system restart or reset without turning off the power.
Press the F8 key
press any key while booting and then press e on booting line statement add 1 at the last and boot the computer.. you can also use "init 1" to boot in single user mode from running os..
start the windows in safe mode.. to do this press f8 while booting and choose the safe mode option from the menu.. now click on start -> run type "msconfig" there you will find the autoexec option.. check for any entry starting "shutdown", if so then delete the entry.. restart computer..
Most systems use the F8 key, while booting up, to start in Safe Mode. Immediately after power up, keep hitting the F8 key about once per second, until you come up in Safe Mode.
If your computer is shutting down when it starts theres something wrong with one of the startup programs. While booting start the computer in safe mode((continuously press F8 at the time of booting)). Click on start-->run.Type "msconfig" and press enter. A new window opens. Click on the startup tab. Click on disable all.Now restart the computer in normal mode. If it starts normally then locate the program causing this conflict by enabling some programs one by one in the msconfig startup menu((This time in normal mode only)). I think it will workIf it still not work, you can try a registry clean tooldownload registry easy herehttp://www.keep-pc-clean.com/
Restart the computer in safe mode: a. Restart your computer. While your computer is starting, repeatedly press the F8 key on your keyboard. On a computer that is configured to run under multiple operating systems, you can press the F8 key when the Boot menu appears. b. When the Windows Advanced Options menu appears, select an option, and then press ENTER. c. When the Boot menu appears again, and the words "Safe Mode" appear in blue at the bottom of the screen, select the installation that you want to start, and then press ENTER. 2. Open My Computer, and then open the C:\Windows\INF folder. 3. Right-click the sr.inf file, and then click Install. 4. When the installation process has completed, restart the computer.
It depends on what you are trying to hack, ex: if you are trying to hack into the Administrators account then while the computer is booting up ( immedietly when you turn it on write when you press the power button) Hold F8 the button not buttons(f, and 8).
Press the F8 key while the system is booting. Then choose safe mode.
If you are referring to restarting an iMac, you can choose one of the following options;Click on the Apple menu, and select the Restart optionTo force a restart, in the even that your iMac freezes, you can hold down Control+Both Command Keys, while holding down this combination press the power button, this will force a restart.If you are referring to restoring an iMac, you should do the below;You will need your Mac OS X install disk,Insert your install CD/DVD into the drive and restart your computer,While it is booting, hold down the 'D' key for it to run from the disc,Follow the on-screen prompts to do what you wish to do.
If you want to restart the game while it is playing, press L+R+Start+Select If you want to restart the Nintendo 3DS itself, press the power button to turn it off and turn it back on again.