About 2 months ago, my HP TX1000 Tablet PC started to hang every now and then. It started with BSODs often sighting the nVidia display adapter as the culprit. When Vista SP1 came along, the BSODs went away. They were replaced with a sudden white screen which gradually degraded into a screen of black and white alternative vertical bars. The problem finally escalated to the point the tablet would not boot at all.
I looked all over the Internet, called HP Support but couldn't get it resolved. Finally, HP asked me to ship the TX to US (country of purchase) so they could take a look at it. Finding this to be the final solution, I was looking around for the best method to do so. HP quite helpfully told me to ship it to their nearest service depot (which is in India), so that they could take care of the shipping from there. But, in the meantime I went ahead and spoke to e-wis, the local business partner for IBM and a leading dealer for HP, Lexmark and host of other products. The good people there promised to fix it up under warranty, with no charge to me.
Well, after about a month, my beloved tablet PC back with a new motherboard and is running smoothly. I almost had lost faith on getting it fixed. But, here I am typing away on machine that I almost left for dead. :)