Windows update - wake from sleep issue

[ibelieveinmrreeves]

A couple of weeks ago I installed some windows updates (seemed to go on constantly for a couple of days), and ever since then, when waking from sleep, roughly 2/3rds of the time the screen flips between shades of black and then reboots itself. I'd obviously prefer it if it didn't do this. Before this I could just close my laptop and pick it up again later with no issue.

I've tried rolling back/updating display drivers with no luck. Any ideas? It's an HP Pavilion if that helps.