Satellite L500 blue screen

[tomodachi]

New ram, CPU, HDD and with or without wifi card no change.
HDD can be formatted succesfully but when its done and it comes to load OS I get a blue screen and restart.
I see a dark dot on south chip you can see it on Intel s "e"
first I thougt south is blown and blown chips usually has a mark of deformation but this one is pretty smooth,
I am confused about this

motherboard is LA-4981P Rev 1.0
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motherboard is LA-4981P Rev 1.0

[dj_ricoh]

Re: Satellite L500 blue screen

clean it with IPA and try other hdd or try to go live like hiren and see