Originally Posted by
kalniel
I suspect the problem is with the power saving modes - either crashing on entering or in particular, problems waking.
The causes can be related to GPU (in your case, CPU) power saving modes, or the PSU might not be providing enough juice on standby to wake up from keyboard or power switch operation.
Windows can check the configuration of drivers etc. for power saving via the following:
Typically that will highlight problems going into suspension, rather than waking, but it might be worth a look. GPU drivers should certainly be updated if you can.
Otherwise a workaround is changing the power saving options in windows (type power saving into the dialogue box and pick 'change what the power-saving options do') - disable turning off the display and see if that helps.