I replaced the LCD panel in my Dell Inspiron 1521. I ordered the replacement form Dell and installed it with no problmes. excpet 1. everything works but the screen is dim when the computer is running on the battery. I went int the BIOS Setup program under Video and changed brightness value to 8 from the default of 3. I usually do this with Dell notebooks. 3 is just to dim. i saved the changes on exit and turned the computer off. Later, when i turned it back on, it had reverted back to level 3. I went back into Setup and changed it back to 8 and made sure i saved the changes. But it reverted back to 3 later. I've done this 4 times now. This must be related to the LCD panel changes but I'm stumped. Any ideas on how i can get it to hold the setting?