T61p suddently emergency halts out of the blue

[benjs]

Hi!

Do you think this is hardware related or does this rather seem like a software issue?

I have a T61p (6457-Y6P) with a Core 2 Duo T9300 and an Nvidia Quadro 570m running on Windows 7 x64 and 4gb RAM.
(BIOS version is 2.27 and the Nvidia Quadro FX has driver version 8.17.12.7533 and BIOS version 60.84.51.0.0)

Recently, I started using the "extend"-monitor-mode again to use both my Thinkpad's display & an external TFT. (Before that I only used the "projector-only"-mode to use my external monitor and have the Thinkpad display disabled.)

While I'm working (editing documents on my primary screen and running a video stream on the secondary Thinkpad-screen) suddently the Thinkpad Active Protection system tells me it's disabled (no idea why), the system freezes, the displays go blank, the HD-led on my Thinkpad blinks a few times and then the Thinkpad powers itself off.
This whole process takes a few seconds to complete.

Holding my hand over my Thinkpad's keyboard over any place that could be / should be hot if either CPU or GPU overheats I wasn't really able to feel any hot places (it seems quite ok actually: the plastic hardly feels over the 21°C/70°F room temperature.)

I can't really reproduce this: it just seems to happen every now and then, and I'm at a loss as to why.
Could this be related to one of those damaged Nvidia-Chips? Do they need reballing or something? Is this a driver issue reporting wrong (e.g. sensor?) information to the BIOS making the Thinkpad want to emergency halt all of a sudden?

Thanks in advance for any help!

PS: If all goes wrong, I still have a TPP+NBD etc guarantee; but it'd be great if I could keep using my Thinkpad and not use that.

[RealBlackStuff]

Having the crappy nVidia GPU and more important, having warranty, send it in for a replacement mobo.
If you wait till warranty expires it's gonna bite you in your a$$!

[benjs]

Aye, will do.

[TuuS]

Definitely send it in for warranty, even if it's not the GPU, if it fails later, out of warranty, then you'll have some documentation of a problem that existed and might get it covered.

Also, if your system build date is before (08/08) yy/mm, you most likely have the unreliable gpu and should do everything you can to get it replaced before your warranty expires.