Computer will NOT wake up from sleep mode
Win 7 Home Premium (64). 4+ years old, with all the updates including latest Tuesday's. I've always put it into sleep mode when finished using for a while, and then after hours (or even days) woke it up by hitting any key (usually the enter key). Twice, in the past couple of days, it would not wake up on any key. It will do it, if I put it to sleep, and then wake it in a short time. When it wouldn't, after several hours, I had to push the power button, and then it said it was "resuming Windows". The first time, it failed to do that, and gave me a choice to restart, which I did. The second time, it resumed Windows (I think I pushed fewer buttons during the process, allowing it to do so). I did a couple of scans, but they didn't find any problems. Could this month's Tuesday updates have messed with something to cause this? Any other ideas?