Aspire 4937 Model KAL90 black screen after BIOS update

JackE

Are you able to HDMI or VGA out to an external TV or monitor? Just want to make sure the lid screen itself isn't an issue. Jack E/NJ 

Hazx

Still no luck , black screen with hdmi on tv and laptop

JackE

The bios boot block may have been irreparably damaged by attempting to use the wrong 4736 fd file. You can try to force a repair by re-flashing with the FAT32 stick & correct fd file by the Fn+Esc method. If you see evidence that the bios may be recognizing more than just the DVD drive now, it might be worth re-flashing a number of times to see if you can get the boot block back to normal. Jack E/NJ   

renzsjb

I know I'm 1 & half year late but just in case somebody else is searching, here's how I solved it on the same Aspire 4937G model.

1) download BIOS from here

2) extract exe file using 7zip etc to your desktop

3) rename KALG0203.fd to KAL90X64.fd

4) format a usbdrive with FAT32

5) copy only KAL90X64.fd to the usbdrive

6) unplug the adapter from the 4937 laptop but leave the battery in

7) plug in the usbdrive

8) while pressing down FN and ESC keys, plug in the adapter and press the power button

9) leave the laptop to do its thing and it will auto reboot normally to bios and OS. (normally takes about 3-5 minutes.)

Done.

This is exactly how I did it today. Thanks and regards.

Hazx

renzsjb said:

I know I'm 1 & half year late but just in case somebody else is searching, here's how I solved it on the same Aspire 4937G model.

1) download BIOS from here

2) extract exe file using 7zip etc to your desktop

3) rename KALG0203.fd to KAL90X64.fd

4) format a usbdrive with FAT32

5) copy only KAL90X64.fd to the usbdrive

6) unplug the adapter from the 4937 laptop but leave the battery in

7) plug in the usbdrive

8) while pressing down FN and ESC keys, plug in the adapter and press the power button

9) leave the laptop to do its thing and it will auto reboot normally to bios and OS. (normally takes about 3-5 minutes.)

Done.

This is exactly how I did it today. Thanks and regards.

Thanks for the reply after that long time .

Does this method work without battery?

Becasue i tried and it didnt .

HopeZ

Hazx said:

renzsjb said:

I know I'm 1 & half year late but just in case somebody else is searching, here's how I solved it on the same Aspire 4937G model.

1) download BIOS from here

2) extract exe file using 7zip etc to your desktop

3) rename KALG0203.fd to KAL90X64.fd

4) format a usbdrive with FAT32

5) copy only KAL90X64.fd to the usbdrive

6) unplug the adapter from the 4937 laptop but leave the battery in

7) plug in the usbdrive

8) while pressing down FN and ESC keys, plug in the adapter and press the power button

9) leave the laptop to do its thing and it will auto reboot normally to bios and OS. (normally takes about 3-5 minutes.)

Done.

This is exactly how I did it today. Thanks and regards.

Thanks for the reply after that long time .

Does this method work without battery?

Becasue i tried and it didnt .

it's work without battery .
I did it.
But I rename KALG0203.fd to KALG0X64.fd and it worked !
I hope this will help you~

amarnath280495

bymistake i have wrongly updated my bios an iam facing blackscreen. MOdel acer aspire 5755. Can you help me to solve this.

billsey

@amarnath280495 you should start a new thread with your question. This thread is several years old and for a different model than yours. Please include the full model number, the symptoms and what led up to them, and the steps you have tried already.

k0m3n9

HopeZ said:

Hazx said:

renzsjb said:

I know I'm 1 & half year late but just in case somebody else is searching, here's how I solved it on the same Aspire 4937G model.

1) download BIOS from here

2) extract exe file using 7zip etc to your desktop

3) rename KALG0203.fd to KAL90X64.fd

4) format a usbdrive with FAT32

5) copy only KAL90X64.fd to the usbdrive

6) unplug the adapter from the 4937 laptop but leave the battery in

7) plug in the usbdrive

8) while pressing down FN and ESC keys, plug in the adapter and press the power button

9) leave the laptop to do its thing and it will auto reboot normally to bios and OS. (normally takes about 3-5 minutes.)

Done.

This is exactly how I did it today. Thanks and regards.

Thanks for the reply after that long time .

Does this method work without battery?

Becasue i tried and it didnt .

it's work without battery .
I did it.
But I rename KALG0203.fd to KALG0X64.fd and it worked !
I hope this will help you~

Does it solve issue with touchpad & quicklaunch not working?

k0m3n9

HopeZ said:

Hazx said:

renzsjb said:

I know I'm 1 & half year late but just in case somebody else is searching, here's how I solved it on the same Aspire 4937G model.

1) download BIOS from here

2) extract exe file using 7zip etc to your desktop

3) rename KALG0203.fd to KAL90X64.fd

4) format a usbdrive with FAT32

5) copy only KAL90X64.fd to the usbdrive

6) unplug the adapter from the 4937 laptop but leave the battery in

7) plug in the usbdrive

8) while pressing down FN and ESC keys, plug in the adapter and press the power button

9) leave the laptop to do its thing and it will auto reboot normally to bios and OS. (normally takes about 3-5 minutes.)

Done.

This is exactly how I did it today. Thanks and regards.

Thanks for the reply after that long time .

Does this method work without battery?

Becasue i tried and it didnt .

it's work without battery .
I did it.
But I rename KALG0203.fd to KALG0X64.fd and it worked !
I hope this will help you~

Does it solve issue with touchpad & quicklaunch not working?

Hazx

@HopeZ

The method workd since that time. I forogt to post back. the lapotop now is alive.

Thank you.

jasamnaeem

I have acer aspire 5749z. I accidentally flashed bios of acer 5750. I didn't know it won't work....it was installing and suddenly pink led appears on battery led. now device is not turning on at any cost.

billsey

@jasamnaeem you should start a new thread with your question. This thread is several years old and for a different model than yours. Please include the full model number, the symptoms and what led up to them, and the steps you have tried already.