Sony PCG-K33 I have this sony laptop wich has worked great for the past 3 years but all of a sudden it won't start. It gets as far as the windows logo and then a blue screen pops up for a part of a second and i can't read it.... when i start it up i get the typical error screen witch say's Safe Mode and Safe Mode with networking and Safe Mode with command prompt and Start windows at the last time every thing worked(a new program you installed might have coused this) and finally Start Windows normally but the same story with all of them... as far as the windows logo and the bomm the blue screen and it starts over. Any solutions? any?

Your OS is corrupted then if you cant get into safe mode. Your going to need to wipe out the hard drive and get your computer back to factory defaults. If you need help with that I'll be more then willing to help you.

WHEN THE COMPUTER IS TURNED ON THERE SHOULD BE SOME INSTRUCTIONS POP UP ON THE SCREEN TELL OPTION TO DO YOU WANT TO DO A HARD DRIVE RESTORE, GO TO RESTORE AND LELCT REBUILT THE ALLACATION TABLE YES TO ALL QUESTIONS AND REBOOT AND IT WILL REBIULD THE HARD DRIVE ALLACATION ON THE HARD DRIVE

ROD

THIS WILL KEEP YOU FROM DOING TOTAL RESTORE ON HARD DRIVE AND LOOSING ALL YOUR INFORMATION THIS PROCEDURE MAY TAKE A WHILE HOURS DEPENDING HOW BIG THE ALACATION TABLE IS

ROD

Windows is set to restart on system failure by default, and the blue screen you see is known as BSOD (Blue screen of death), and it appears when any of numerous problems occur. Therefore if you're seeing the BSOD, you probably won't be able to boot to safe mode to try and recover either, but worth a try (tap the F8 key on boot and you'll get the "Safe Mode" boot option).
So, I would recommend booting to a Windows installation disk (you may have to edit BIOS settings to get your PC to boot to CD/DVD) and format the partition that your OS currently resides on and doing a clean installation of Windows. This is an almost sure fix, but not the only one. If you have data on your hard drive that you can't afford to lose then you could try a "Repair install", this can be attempted by pressing the "R" key when prompted by the installation to attempt a repair install.
If you don't have a OS installation disk, there is probably a recovery partition on the hard drive that you can restore your PC to it's original configuration. Let us know?