Hard Boot LG Revalution - LG Cell Phones

it's may be error of the hard drive. therefor remove and reconnect ,if not fix pls connect to another pc and test. or replace the hard drive.

Do not forget to backup your phone’s data before doing a factory data reset. Here’s our guide.

Performing a Factory data reset restores your device to the original factory settings as it comes out of the box. It also deletes the data like installed apps, contacts, messages, images, etc. present on the internal storage. It does not, however, affect any data stored on the external SD card. Now here is how you can hard reset your LG G2/G3 from device Settings:

Tap the Menu key from Homescreen.
Select System settings> General.
Now scroll to PERSONAL.
Select Backup & reset option.
Tap Factory data reset> Reset phone.
Select Erase everything.
When the warning window prompts, tap OK.
Hard Reset LG G2 with Hardware Keys
If you unable to perform a factory data reset on your LG G2/G3 using the device settings for some reasons, you can try the hardware key method. Just follow the steps given below:

Turn off your LG G2/G3.
Now press and hold the Power + Volume down buttons simultaneously for about 8 seconds.
When the LG Logo appears, release and then immediately re-hold the Power button.
Release the Power key as soon as you see the ‘FACTORY HARD RESET’ screen.
Press the Power key to reset your device.
Press the Power key again to confirm factory data reset.
Wait till reset is done.
Boot LG G3 /G2 into Safe Mode
To fix an issue caused by a 3rd-party app, you can boot your LG G3/G2 into Safe mode and delete the suspect app. You can turn on Safe mode by following these steps:

Did it have an OS previously, or is this a new netbook. Also, is their any crackling sound when booting? If there is a crackling, it's possible the hard drive crashed. Without a hard drive, it wouldn't be able to boot the OS.

IF your HDD is working, and IF you have a Recovery Partition, at boot start tapping F-11 to enter the restore/recovery software. Can you boot to Safe Mode? This may help: http://wiki.answers.com/Q/How_do_you_restore_lg_x120_notebook_to_factory_setting

First try a soft boot by with the power on remove the battery then replace same and power up if these dosent work youll have to do what is called a hard boot hold all the buttons on the phone down at the same time this should bring up the icon for factory reboot(beware you will lose any apps you have downloaded onto the phone even those youve purchased.) then press the icon and it should bring your phone back to the state it was when you first got it.

Hi there! Welcome to FixYa! Boot Failure error is generally an error saying that it cannot find Windows on the hard drive. More likely that the hard drive is already broken during the incident or the cable that connects your hard drive was disconnected. You can check if hard drive is still detected by going into BIOS (usually you need to press F2 to launch it). if its not there, then its either the cable is disconnected or the hard drive is broken.

you need a new speedo head/speedometer assembly

Sorry, It sounds like transfer case failure.

Please check the RAM...