Hello,
I asked this question a while back on the thinkpads.com forum, but I would like to see if I can get an official word about this.
I bought my Thinkpad X31 through ebay. At the time, it had a couple weeks of warranty remaining. I bought a two-year warranty extension.
The Thinkpad, as it came to me, did not have any stickers on the base:
~300 kB picture. In particular, the model number/serial number sticker is missing. I think the laptop may have had some or all of the plastics replaced, but to be honest I know nothing about its history.
I got the model and serial numbers from PC Doctor and they are also in the BIOS. Based on that serial number, the machine was in warranty when I extended it.
Thankfully I haven't had the need to exercise the warranty yet, but if I do, what are Lenovo's procedures? Will a claim be accepted even though the stickers are missing? What will happen if the motherboard dies and I am unable to load the serial number from the BIOS? I have the invoice for warranty extension - would that be accepted as partial proof?
Thanks for any input.