Question CPU upgrade result blank screen

Feb 19, 2022
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My laptop have 988rPGA (idk why listed as 989rPGA in CPU-Z) socket. I already check the HM55 chipset capable to upgrade from i3 350M to i7 640M. I have already upgrade the similar laptop and it's going well. But this time it stuck at blank screen. The BIOS already updated to the last version.

Is it the problem on my bios? or the processor?
I can't find the processor list that supported by my AMI BIOS.

Note: The laptop is Asus A42J with mainboard K42JK. Upgrade from i3 350M to i7 640M.


 
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both of them 988
[URL]https://ark.intel.com/content/www/id/id/ark/products/43529/intel-core-i3-350m-processor-3m-cache-2-26-ghz.html[/URL]
You are correct, Since you updated the bios and the new CPU is still not working put the old one back in and see what it does. Maybe the new one is just dead.
 
Feb 19, 2022
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You are correct, Since you updated the bios and the new CPU is still not working put the old one back in and see what it does. Maybe the new one is just dead.
when i put the old one, it works perfectly
is there any way to make sure the cpu is dead without other mainboard? Because i don't have any mainboard with the same socket. Also the seller claims it is tested and works
 
when i put the old one, it works perfectly
is there any way to make sure the cpu is dead without other mainboard? Because i don't have any mainboard with the same socket. Also the seller claims it is tested and works
I could not find a CPU compatibly list for that motherboard. But I see some old eBay listing with your same laptop for sale with that CPU in it. I would say it's dead. No way to test it other then what you did.
 

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