My computer froze and wouldnt respond so I held down the power button for about 5 seconds until the computer shuts down. So I waited for about 5 minutes and rebooted my computer.
A screen came up, giving me different safe mode options or start windows normally. I used the arrows key to use Safe Mode. My windows started to boot up but then it went back to the page with the options for different safe modes. I read online where if you enter safemode and then you hit F8 at the correct timing it gives you an advanced list. So I used that. Once I get to the windows advanced list a blue screen came up that said a problem has been detected and to retsart my computer, select safemode, hit F8 and then select Safemode again under the advanced list. When I did so, it took me back to the screen again with the safe mode options.
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Press and hold the power button for fifteen seconds or so, ignoring the "Shut down?" prompt, until it turns off. Release the button then press and hold it for a second or two until it starts to reboot.
You will have to get your power button unstuck. I do not know what type of button you have but if you would like to at least get your PC on without it instantly turning off, you can remove the power switch connector from the motherboard. You will eventually need to have the switch unstuck, or replaced though.
The system software may be corrupt causing issues. Enter Safe Mode and select System Update. System Update will reinstall the system software. If you don't know how to enter Safe Mode, follow the instructions below.
Turn off the PS3 by holding the power button on the front of the unit till the power light is red.
Touch and hold the power button. You will hear the first beep, meaning the PS3 is powering on. Continue to hold the power button and after about 5 seconds, you will hear a second beep, indicating the video reset. Continue to hold the power button and after about another 5 seconds you will hear a third beep and the system will power off (power light is red).
Touch and hold the power button, you will hear the first beep, again for the PS3 to power on. Continue to hold the power button and after about 5 seconds, you will hear a second beep for video reset. Continue to hold the power button and after about another 5 seconds you will hear a quick double beep. At that point release the power button. If you succeeded in activating Safe Mode, you will see a message on the screen saying, "Connect the controller using a USB cable and then press the PS button.". Connect a USB cable to the controller and the PS3 and press the PS button to enter Safe Mode. You should then see the Safe Mode menu.
If this doesn't work, try the options listed in the Safe Mode menu in the following order:
Restore Default Settings Restore File System Rebuild Database Restore PS3 System
N.B. There is a possibility that with any of these procedures, data could be corrupted and/or lost.
Hope this helps. Please don't hesitate to contact me should you require any further assistance.
Connect your phone to the computer and open iTunes. Hold both the home key and the power button until the iPhone turns off. Continue to hold them both for 5 more seconds. Release the power button but continue to hold the home button for 10 - 15 more seconds. I tunes should detect the phone in DFU mode. Restore firmware from this mode.
try resetting the SMC and the NVRAM. This occasionally stores the startup state and any keystrokes used during boot. Common issue with all intel macs.
Resetting PRAM and NVRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
Your computer's PRAM and the NVRAM are reset to the default values. The clock settings may be reset to a default date on some models.
To reset the SMC on an iMac
1. From the Apple menu, choose Shut Down (or if the computer is not responding, hold the power button for approximately ten seconds until it powers off).
2. Unplug all cables from the computer, including the power cord.
3. Wait at least 15 seconds. The SMC reset occurs automatically once the iMac has been unplugged from the AC power source for several seconds.
4. Plug the power cord back in, making sure the power button is not being pressed at the time.
5. Reconnect your keyboard and mouse to the computer.
6. Press the power button on the back to start up your computer.
Note: The iMac does not have a button on the main logic board for resetting the SMC, which eliminates the need to remove the computer?s cover to reset it (as required for some other models).
Well, mine was frozen, and wouldnt respond to anything i was doing. so it wouldnt turn off. I let it stay on all night, but in the morning i went to it, and it was dead, so i went and plugged it up to charge, once it got a little battery, I turned it on, and it worked perfectly fine. try thisss(: