100% Memory usage ?!

[OspreyO]

Have you tried not using some apps, see if they are leaking, might have a bug or such.

Chrome has become really flaky for me recently.

 

[rockermark]

I had a very similar problem a few weeks ago.
Turned out to be the killer networking program.
I removed their software and just used the drivers not had a problem since.
There was a tick box in the software (can't remember which one), that was causing the problem.
*EDIT*
It was the bandwidth control that needed unchecking.
Although when restarting mine would be checked again.

 

[D3K]

I had a very similar problem a few weeks ago.
Turned out to be the killer networking program.
I removed their software and just used the drivers not had a problem since.
There was a tick box in the software (can't remember which one), that was causing the problem.
*EDIT*
It was the bandwidth control that needed unchecking.
Although when restarting mine would be checked again.

I also had this issue, in addition to indexing going nuts.

Killer, app center, and fragmented install media from the web, have put me right of gigabyte mobos.