Defective CPU? System Freezes Installing HD4000 drivers in I7 3250m

Mar 28, 2018
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Hello!
I'm in need of some assistance and wisdom.
I recently sold an I7 3250m cpu from a dead motherboard Lenovo G580, the problem is the buyer is telling me that the cpu is defective, that when he attempts to install the HD4000 graphic drivers while in windows 10 pro (clean install) the system freezes and he has to do a hard reboot. While claiming that with its original 3rd Gen I5 no such thing happens.
Also the driver is auto installed either by Windows10 or by the Lenovo driver update app. (The new system is a Lenovo T430)
My question is if this is a driver (software) issue or can it a be a problem with the CPU?
As anyone heard or had a similar problem? The google searches didn´t return any results, just discussions on drivers, driver installation order etc... Could a stress test (Furmark) be done without installed drivers to confirm a CPU hardware fault? Any other ideas?
Thank you.
 
Mar 28, 2018
2
0
10


Thank you for your reply.
The thing is he tells me it´s not the first time upgrading a CPU in the same model laptop and never had this problem.