Hi, I have a 4820TG and for some reason my ATi display isn't working. I tried to change the bios settings (which i did not know what version is it) from switchable to discrete. and now i got no display at all. i tried to flash the modded bios provided here but no luck it doesn't boot up. so i tried every single official bios and the only version works is 1.19. the thing is after i flashed the 1.19 no display still. Does anyone know which official bios version has the option of discrete and switchable? and mind showing me the photos of the bios interface so that i could actually select back to switchable without the display. help needed~!!!
If your problem is specifically because ATI graphics is failed, you could fix this by setting your BIOS settings to defaults. I have included the steps you need to do it blindly (I think it was on page 3?). Or read below.
Originally Posted by DmitriyNchk
As I understand it in this notebook BIOS settings are not reset by pulling out the battery. Tell me how to reset the BIOS settings hardware way?
You can reset the BIOS settings via a special jumper and/or by taking out the BIOS battery. Please Google for a service manual for 4820TG or 5820G to find the correct procedure you need to follow to reset the BIOS to default.