tngalng :
3 of the same one... 2 retail, 1 direct. And I do know computers. My 3 year old is fine. Did RMA, thanks. In the store the higher level model had a nonfunctioning trackpad on the demo. Ideapad Flex and Yoga are out.
I agree some models have issues, but you didn't provide the information that this happened on multiple machines of the same model in the initial question so I had to go solely by what you wrote.
It's also not really a Windows 8 issue usually, but a QUALITY issue to do with manufacturing the laptop hardware.
My advice is twofold:
1. Concentrate on ASUS, HP, or Lenovo.
2. Look at Customer Reviews online and find a laptop with the highest score with MULTIPLE comments (20+ preferably).
Asking individuals here is fine, but that won't give you any reliable statistics.
(If you wonder why you can't find anything above 4/5 the reason may be people giving low scores because of the new W8 interface. I solve that by using Start8.)
If the machine has "only" version 8, then the 8.1 update is done through the STORE link on the W8 page. If you don't see it make sure all the Microsoft Updates are complete.