Lenovo G580 Sleep problem

Hi

I have a Lenovo g580 with windows 7 home premium 64 bit, whenever it goes to sleep, in whatever way, I get a black screen telling me that windows did not shutdown successfully.

I have completed a system restore to factory settings and downloaded and installed all updates. I have also run all Lenovo diagnostics to no avail.

I have changed the settings in power options, the bios has no power option.

I would appreciate any help

Many thanks

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/510751/lenovo-g580-sleep-problem/