I have an old beloved Probook 4540s Laptop Product Number C9K7OUT#ABA
I am an Embedded Engineer and I love this Laptop for it's Multiple I/O Options and Duel monitor capabilities.
This Laptop got the Screen Jitters then died with a white 9 Long blinks o 8long 1 short error code which I cannot find in the list of error codes.
It has an i3 core processor and runs Windows 7 Pro. I tore the thing apart and was thinking about fixing the existing system Board, but then I got the Idea of upgrading the System Board to an i7 board with dedicated 2 gig dedicated graphics.
The problem I see is that I no longer have the Windows activation code and I am thinking that Windows will not like the change.
I don't want to spend the money to upgrade it only to find that I have to also repurchase and reinstall Windows 7.
I would like to know what my options are, Just try and fix the existing i3 Board or upgrade an i7 System Board?
If I upgrade which System Board and i7 processor should I use, also will I have to replace the Heat Sink?
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