Thank you for your reply ! Luckily i decided to renew my 3 years guarantee who was expiring a week ago. Perfect timing: guarantee expire, laptop stop working. Great ! Anyway to be sure of this without gettint it to repair and replacing the motherboard ? (as i suppose the chipset is integrated in it....

Hi, on my T61 (7664-1FG) nvidia quadro nvs 140M the lcd screen suddenly turned black as I had a second monitor connected. What's happening is very strange, the computer boots up normally except the laptop lcd remains black. On the external monitor, no bios enter prompt or thinkpad logo either. Final...