System Specs: Intel 4770K soft overclock to 4.3 Asus Sabertooth z87 Asus GTX 780 3GB (320.49 drivers) Crucial Vengeance 16gb running 1866 XMP Samsung 840 pro 256gb 2x wd red 3tb in RAID 1 Issue: Hey everyone, bit of a problem at the moment! I have recently built a computer which runs nice and smoothly for a day or two, after that it has a tendency to freeze and lock up once every minute for a couple of seconds. It doesn't seem to lock up if I don't do anything (i.e. watching a video works fine), just when I move the mouse or type something it intermittently freezes up. I've run a full memtest on my RAM and full WD lifeguard scans on my drives with full passes for both, I'm currently thinking that it's the GPU but I don't really have any way to check this at video memory stress test will not run on the card as it is too new. Anyone know of similar issues? I've been looking around on-line and nothing is coming up that's on the haswell line. Kind of feel like I've spent a lot of money on a buggy POS at the moment. Thanks in advance!