Intel® Processors, Tools, and Utilities
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CPU upgrade issue


Dear Customer Service

I would need your technical support.

This is my actual system. (Photo is attached)

I wanted to upgrade Legacy Intel® Celeron® Processor Mobile 520 to Legacy Intel® Celeron® Processor Mobile 550.

Socket PBGA478 is supported by both CPU's, but the computer does not boot with M 550.

I had updated the BIOS to the latest one before swapping processors.

Latest BIOS available: V1.08

Operating System: Windows 7

Processors comparison:,27977,27977

Is there anything I could do to make it work?

Can I do it without deleting the OS I already set?

Thank you for your time and support.



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2 Replies

Hello Chris1981,


Thank you for contacting us regarding the issue that you are experiencing when installing your Intel® Celeron® Processor 550 in your Acer TravelMate 5310 OEM system, It will be more than a pleasure to assist you.


In this case, Intel doesn't recommend opening or upgrading the processor in a laptop system. Since Intel supplies laptop components but doesn't manufacture or sell complete laptop systems, your OEM company (Acer) can add limitations on your system that may affect the actual compatibility (wireless adapters, CPU , RAM memory) of your computer.


Basically Laptop manufacturers customize and validate hardware and software for a whole system. If you're experiencing issues with your laptop, we strongly recommend you to contact the manufacturer or visit their support website for assistance on this matter.


I apologize for the inconvenience that this may cause.


Hope this helps.


Best Regards,


Diego S.


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Super User

Before attempting to change the processor, you need to verify with the board/system manufacturer that their BIOS actually contains support for the desired processor. In order to use a processor, this processor must be Socket, Board and BIOS compatible.


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