Solving CPU FSB is locked

Users questions: My CPU is the P4506, 133 * 20 = 2.66G, some time before that comes with the motherboard BIOS in the application to modify the FSB 144 * 20 = 2.88G, even after normal use, there was no sense of what's the use, on with the BIOS to restore the original values. reduction revealed 13 3 * 20 = 2.66G, and later overclocked to 2.88G, has been used properly, can be somehow at noon today to 2.00G (100 * 20), FSB locked at 100, how to change all switch over, as if locked Like living with a BIOS recovery not, redo the system does not OK, modify the FSB does not work, boot display is always 100 * 20 = 2.00G, another to explain my computer has been bought two years, and has been normal. Please master answer, thank you !!!!!!!
Experts answer: the motherboard battery brought down, 2 minutes, then loaded, on it!
  • This information provided by the users.Thanks!