This is a Lenovo Z565 which originally came with Windows 7, and I downgraded it to XP.
As soon as I close the lid, Windows freezes instantly and doesn't respond to any input. The screen stays on, and the cursor moves but doesn't click. very weird. I have to do a hard shutdown after this.
The same also happens when hibernate is the selected action on lid closing.
What's more annoying is that I have found no standby error on the event log. I don't think I am missing any drivers, device manager doesn't show anything missing. It's also worth noting that it doesn't happen when I select "Standby" from the Start menu.
Any ideas on solving or diagnosing it?