Sony vaio hangs on start up

It should be fixable. You should try running the factory restore again.

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Recover From Within Windows 71Click the "Start" icon in the lower-left corner of the screen and click "All Programs." Click "VAIO Care" then click "VAIO Care" again. The VAIO Care program will open.
2Click "Recovery & restore" on the left side of the VAIO Care window, then click "Recovery." Click "Recovery Computer" on the right side of the program window.
3Click "Yes" to verify that you are aware the computer will be recovered to its original factory settings and that all of your personal files and programs will be erased. The computer will restart and the recovery process will begin. When the process is finished, the computer will restart again and boot up to the Windows 7 setup screen.
Recover Using Recovery Partition1Turn on or restart your Sony Vaio computer.
2Press the "F10" key repeatedly when the Vaio logo appears on the screen during the boot process to be redirected to the Boot Options menu on your machine. If the Boot Options menu does not appear by the time the Windows logo appears on your screen, let the computer finish booting up, then restart the computer and try again.
3Highlight "VAIO Recovery Environment" in your Boot Options menu and press "Enter." The VAIO Care program will appear on your screen. Follow steps 2 and 3 in Section 1 to recover your Sony Vaio computer with Windows 7 to its original factory settings.
Recovery Using Recovery Discs1Insert the first recovery disc in your optical drive and restart your Sony Vaio computer. The total number of recovery discs varies based on your Sony Vaio computer. The Boot Options menu will appear on your screen. Highlight "Start Sony VAIO Care Rescue" using the arrow keys on the keyboard and press "Enter." The "VAIO Care Rescue" program will appear on the screen.
2Click "Tools," then click "Start advanced recovery wizard." In the "Do you need to rescue your data?" window, click "Skip rescue."
3Click "Factory condition," then click "Next." Click "Yes, I'm sure" when asked if you want to proceed with the recovery knowing that all of your personal files and programs will be erased. Click "Start Recovery." Remove and insert the recovery discs as prompted by the computer.
4Remove the final recovery disc and click "Restart" when a message appears on the screen informing you that the recovery is complete. The computer will boot up to the Windows 7 setup screen where you can begin personalizing your operating system.


Read more: How to Recover Factory Settings on Sony Vaio Computer with Windows 7 ' eHow.com http://www.ehow.com/how_7680511_recover-vaio-computer-windows-7.html#ixzz1SY1sA7Sg

Hope this resolution fix the problem on your computer.Thanks for contacting Fixya. Bye for now.

At boot up press F8 and from the B&W menu select Last Good Boot up or words to that effects. This will restore your laptop to the last good boot up date.

Else from the B&W menu select the Safe Mode.

have you tried booting in safe mode?

as the system is booting repeatedly press F8 until a menu appears where you use the aarow keys to select safe mode by pressing enter.

F2 or F12. I believe its F2 on sony's

Hello,
For sony vaio, this is normally caused by some settngs (a set of switches) on the board that one or two trip over, thereby changing the settings. Because of this, the Laptop fails to turn at all or boot properly. You may have to get a professional technician to check it on the board for you.

All the best.

hi i think u can  find it on Sony offical web page for free

Your operating system may be corrupt. Please try the following:

Try hitting the F8 key repetedly at boot to see if it goes into the preboot menu. If so, choose last known good config and try booting again. If not, you may want to grab your restore disk and perform a windows repair. Insert the CD in your drive and boot to it. Choose the option to repair your windows installation. This will fix windows without destroying your data

I can't see nothing in my screen

My phone's screen freezes at start-up and I cab't even get to the menu to restome my factory settings???