Acer Aspire 8735G from GT 240M to HD 5870M ???

Is it possible to use a HD 5870M in that laptop ? Is a driver mod necessary ?
Link to a HD 5870: http://www.ebay.de/itm/VGA-ATI-Rade...er_Computer_Graphikkarten&hash=item4ab3052130

 

I have upgraded to 5870. The graphics card
is working really good, but I have a problem: On the internal Display the colours are not right. On a second external monitor the colours are great. What can I do ?

 

Now I have a big problem. I upgraded the VBIOS of the 5870 to an Asus Bios. There were no errors or else. Now I don't have anything on the screen. With the old GT 240m everything is working. Can anyone help me ,please ?

 

If you made a backup of the original VBIOS and your notebook is passing the POST then it's not such a big deal. You just have to make a bootable USB disk with atiflash.exe and the original vbios file.
Steps for blind flash:
1. Make a bootable usb drive as described above
2. With the GT240M installed (so you would see what you're doing) set the first boot device in BIOS to USB then save and exit BIOS.
3. With the USB drive plugged in check to see if your notebook is actually booting from the USB drive. Also it would be a good idea to check how much time it needs to boot from USB.
4. Install the other card
5. With the USB drive plugged in (preferably in the same USB port as before) power on your notebook and wait the time needed to boot.
6. Carefully type: "atiflash -p 0 BACKUP.bin" without the " ", this is assuming that you placed atiflash.exe in the root directory on your flash drive and your backup file is named BACKUP.bin. Change it accordingly if you need to. After typing the right thing, press Enter and wait. It shouldn't take longer than a minute. After that power off your notebook and then power it back on.

If everything went right you should be able to use your notebook just as you did before the bad flash.

If you did not make a backup of the original VBIOS you should try and find one from someone else or from the internet, then go through the steps described above.
In case your notebook doesn't POST then it's a bit tricky. You have to remove the BIOS chip from the card, program it with an external programmer and solder it back on (this is the way I revived my HD6650M after flashing it with an heavily overclocked HD6770M VBIOS).

 

I think my notebook doesn't boot on the device with the 5870, because it isn't blinking. With the 240M it is blinking. I will try it again with your steps and with a other USB device.

 

A simple way to test if your computer is getting through POST is to toggle the CapsLock or NumLock on and off. If the corresponding LED is reacting to the key you pressed then your computer POSTs OK. Otherwise it means that it halts during POST due to the broken video card (it happened to me).

 

My computer doesn't get through POST. What can I do now ?

 

Find out if there is a key combo that will let you post without a GPU.
Might be worth a shot.

 

If you can't force it to boot without a GPU the only way to repair your card is to remove the VBIOS chip, program it with an SPI EEPROM Programmer and then solder it back onto the card.

 

Are you sure that it's not possible to force the boot ? Where I can get such a programmer in germany ?

 

I am not sure you can't force it to boot. I was just saying there's no other option if it doesn't boot.
Here you can find a kind of SPI EEPROM programmer but make sure it supports the kind of EEPROM your card uses (a small 8 pin chip on the upper left side of the card, near a memory chip).

 

Ok. I checked the boot with the GT 240M and the " - " of the combination I have to type in is a /. Is that right ?

 

Is it possible to flash the vBIOS to the 240m and then solder that piece of the card to the 5870 ? My 240 is nearly broken now. I only have a picture on a second screen. On the internal one I got a white display

 

I don't think it's possible. They almost certainly use different EEPROMs which in turn use different read/write algorithms so it's very unlikely for that to work.
What happened to your GT240m?

 

I don't know. Maybe something other is broken. I booted from the GT 240M to the usb drive and changed the card to HD 5870M to flash the bios. Everthing worked,but the HD 5870M has not flashed to the new vBIOS. I know that is risky, but I don't want to buy such a programmer from China . I tested a 2 GB SD card, but the 5870 isn't working. Now I have a white screen on the internal display. On a external everything is right. I don't know what's broken. Maybe the connector of the display, the GPU or the display itself.

 

The mainboard was dead. I have a new mainboard now. The repair was cheap in comparison to buy a new mainboard at the acer sellers. the 5870M is still dead. Any link how to get this programmer in germany ?

 

If you can access the VBIOS chip while the card is installed in the system, try the following:
-Desolder one pin of the chip.
-Install the card int your system, and boot from the USB drive.
-While still in the machine and powered on, restore the desoldered pin. Be careful with this step, not to short anything!
-Flash your original VBIOS back.

 

And than it goes through POST ?

 

Most MXM machines will go through POST (with no image, of course) if no VBIOS is detected.