[Request] VGN-AR71E BIOS Update or Unlocked

[Playboy]

Hello from Spain, first of all I apologize for the bad English I'm using Google Translate and know not to publish my question.
So I decided to contact you because the problem that I have is very personal and very serious in my opinion.
My problem started when you uninstall a program with Revo Uninnstaler, as seems delete system files that did not have to delete. When you start the system exits the STOP message: 0x0000007B After searching and searching the problem in different forums, I saw that the problem was in the BIOS settings. I need to change the startup mode SATA to IDE hard drive. The problem is that these options do not appear in the BIOS or is blocked so I can not start the system in any way. When looking for a more updated version of my BIOS I found your forum thought that you could help me with the problem. I would like to flash my bios to the latest version of my bios and all options are unlocked.
I can not do backup of my BIOS I can no longer booting up. I appreciate the explanation of a step by step tutorial with all the necessary programs for the flashing process. Please if anyone knows about it would greatly appreciate it took a week can not start my system.
These are the details that I can provide.

Model: VGN-AR71E
Motherboard: Sony Corporation VAIO
BIOS: Phoenix Technologies LTD R2090J8