Dear Sir , I have Sony Vaio VGN-NR220 E laptop.When I'm starting the laptop its not booting the OS .saying Windows failed to restart A recent hardware or software change might be this cause and  I went through the option of:

• safe mode
• safe mode with networking
• safe mode with command prompt
• last known good configuration
• start Windows normally .

But still it is not booting up in safe modes also loaded: windowssystem32driverscrcsisk.sys.. It is the message where it is stopping in all safe modes. Even I tried with CD also but it is not booting up with Windows CD Also, I tried with external CD ROM also and changed the settings in SETUP to boot from CD ROM and to boot from EXTERNAL CD ROM also .. then also  same problem remained. Please solve my problem.Thanks in advance sir. Regards ksr1234

Software/Hardware used:
Laptop not booting OS