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AM3 cpu wont work on AM2 mobo

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March 14, 2012 1:04:56 PM

PLEASE help i did just buy a amd athlon ii x4 640 cpu but it dont work on my AM2 mobo i DID update BIOS to F8e but it dont work anyways ,it shows me black screen.... my MOBO MODEL gigabyte GA-MA69G-S3H . please help !!!!!
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March 14, 2012 1:12:54 PM

Looking at the CPU support list for that board I see there are 2 versions of the Athlon II X4 640, the difference is in the stepping C3 vs E0. Since E0 is the newer stepping and the one not supported, it's likely you have one of these.
March 14, 2012 1:15:04 PM

Time to flash BIOS !!!!...... with a strobe light.
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March 14, 2012 1:18:30 PM

loneninja said:
Looking at the CPU support list for that board I see there are 2 versions of the Athlon II X4 640, the difference is in the stepping C3 vs E0. Since E0 is the newer stepping and the one not supported, it's likely you have one of these.

Amm sorry i didnt understand your question - what i must do now ? sorry im from Latvia lul
March 14, 2012 1:19:18 PM

radnor said:
Time to flash BIOS !!!!...... with a strobe light.

You mean update ? i did update it already
March 14, 2012 1:27:09 PM

AlexBF3 said:
You mean update ? i did update it already



What loneninja is saying, is that there are 2 versions of your CPU. One is supported, the other is not. So, most likely your problem won't have a solution.

What i was saying, just a silly anekdote. I'm Portuguese btw.
March 14, 2012 1:30:08 PM

radnor said:
What loneninja is saying, is that there are 2 versions of your CPU. One is supported, the other is not. So, most likely your problem won't have a solution.

What i was saying, just a silly anekdote. I'm Portuguese btw.

BUT where do i check is my cpu C3 or E0 ? i cant fnd it on da box
March 14, 2012 1:45:09 PM

The CPU should have a serial number, something like this AD3500OJGXBOX or this AMDHDT45TWFGRBOX. Just google it, it will says witch version ti is. Or maybe is ON the CPU it self.
March 14, 2012 2:00:54 PM

radnor said:
The CPU should have a serial number, something like this AD3500OJGXBOX or this AMDHDT45TWFGRBOX. Just google it, it will says witch version ti is. Or maybe is ON the CPU it self.

Amm i have C3 model because my box says ADX640WFGMBOX please help me i did wait for multi core processor for years im so desperate !
March 14, 2012 2:16:47 PM

Ok, then. Reset the BIOS and start removing everything fromt he board. Leave only CPU (with heatsick ofc) , MB , 1 Dimm only and the PSU. And GPU or integrated if you have. See if it posts.
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March 14, 2012 2:37:59 PM


As part of your BIOS update, did you clear the CMOS and reset to system defaults?

March 14, 2012 2:48:17 PM

Wisecracker said:
As part of your BIOS update, did you clear the CMOS and reset to system defaults?

Yep i did pull it out wait 30 secs and put it back
March 14, 2012 3:35:59 PM

radnor said:
Ok, then. Reset the BIOS and start removing everything fromt he board. Leave only CPU (with heatsick ofc) , MB , 1 Dimm only and the PSU. And GPU or integrated if you have. See if it posts.

Well i did everything like you said and it didnt work same scenario ....
!