I purchased a new Lenovo Z585 a few weeks ago. It came preloaded with windows 7. I did the free upgrade to windows 8 but had compatability issues so I re-installed windows 7. I installed all relevant lenovo drivers and everything is running great except for an issue with the sleep function.
Closing the laptop lid puts it to sleep without any issue. However, when I open the lid the screen stays black (not an active black screen, just nothing) and the fan cranks up and puts out some serious heat. The only way to get the screen to come back on is a hard reset.
I have tried installing other various drivers that I think might affect it (power management, chipset, hotfixes). I now have every lenovo driver installed except for things like bluetooth. I am at a loss for how to fix the issue. If I can't resolve it, I might buy an SSD and reinstall windows on that and hope it fixes the issue.