I use an Acer laptop: Aspire 4720-4538
Earlier I was using it, and everything was running normally, and the battery died. Plugged it in, let it charge for awhile, and when I turned it back on it took me to the "Windows Error Recovery" screen. I selected "Launch Startup Repair" and the screen went blank for a moment, and went right back to the recovery screen. Tried it again several times with the same results. Next, I tried selecting "Start Windows Normally" and it tried, rebooted, and took me back to that screen.
I bought it in 2008, refurbished, with Vista pre-installed, and it did not come with disks.