The only thing I haven't tried is updating my chipset drivers, underclocking my CPU back to its original speed (which I'd like to avoid to be honest) or a new HDMI cable. I've tried different refresh rates, updating/rolling back the video card drivers, using benchmark software, updating the monitor drivers, updating my BIOS, plugging the monitors into different outlets, resetting my video card, making sure the HD cable is in properly, and maybe a few others things I can't remember at the moment. The card runs at about 65C or less while playing full so I don't think it's an issue with overheating (and the blackouts can happen right after booting anyway). However, I have run GPU-z while this was happening and I didn't notice any spikes or anomalies while this blacking out happened. Intel i-7 920 2.66GHz (overclocked to 3.2GHz) If so, then you are either experiencing OS corruption or the effect of something installed, Another approach may be to check the Lenovo forum. The power light stays on when this happens and I am pretty sure the problem does not lie with the monitor as I just bought a new one of a completely different brand and I still have the exact same issue. You could use disk imaging to save your current configuration, then install 1511 for trial purposes (or a clean install of 1607) and see if you still have the same issue.
It might happen once a day or a lot, and 5 or 6 times consecutively at that. I have had issues with my monitor going black at random times (seemingly more prevalent while playing games or internet browsing though), staying black for random amounts of time, and returning to normal.
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