Does http://answers.microsoft.com/en-us/windows/forum/windows_8-system/how-to-fix-whea-uncorrectable-error/d4db2745-f4c2-4f2f-bcdc-fa77de7a765b apply? You didn't mention the error code (0x124 ?).
Anyway, http://msdn.microsoft.com/en-us/library/windows/hardware/ff559509%28v=vs.85%29.aspx tells what WHEA means. So the chance that it's a hardware issue is 99%, I'd say. Now find out what's wrong or have a repair shop do it.
I recently installed some updates on my laptop (running windows 8.1) which required a restart. Upon restarting however I received the following error message: wheauncorrectableerror. I tried to start up in safe mode, but to no avail, I still got the same message. I tried to restore the system to before the update, but that failed. I ran command prompt with chkdsk and it failed stage 3, with the following error: "7 data files processed. Errors detected in the uppercase file." I'm not sure what that means. Is the problem with the hardrive? If so how can I fix it? Really just want to get the system working again. Any help would be greatly appreciated!
Thanks in advance, Niles