It looks like something happened there on the 4th. What does it say the error mark is for? And is that about when you started noticing the problem?
If a SMART utility said the drive was ok then it's probably not that. The data values you posted earlier looked ok to me.
The problem started on the 8th. But here's what it says for the 4th:
Faulting application name: wwahost.exe, version: 6.2.9200.16384, time stamp: 0x50107c6e
Faulting module name: ntdll.dll, version: 6.2.9200.16384, time stamp: 0x5010acd2
Exception code: 0x060c201e
Fault offset: 0x00000000000b79d0
Faulting process id: 0x9b0
Faulting application start time: 0x01ce315d720360db
Faulting application path: C:\Windows\system32\wwahost.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: afcf929a-9d50-11e2-be6e-c8600014d3da
Faulting package full name: microsoft.microsoftskydrive_16.4.4388.928_x64__8wekyb3d8bbwe
Faulting package-relative application ID: Microsoft.MicrosoftSkyDrive
I have reservations about saying this, but:
You have been using Win 8 for a while now, obviously. It's been working fine this far.
There are myriad random things that can screw up an installation.
Try a restore point, if you have one.
If all else fails, why not consider a refresh or, if that doesn't work, a reset.
Instead of spending a lot of time pulling your hair out, use the built-in tools to revert your system to a usable one.
This will probably save you a lot of time.
Personally, I would do an image of the drive once you have your system back to where it was before the problems started.
This is what I have been doing for years now, and it has saved me a lot of time and grief.
Although I love troubleshooting, since if successful it would enable you deal quickly with the problem if it recurs, there comes a point when you have to ask yourself what is the quickest and most efficient way out of the situation.
I know your right. I was just hoping not to have to do that.