according what you have described, i think the best way to resolve this issue is to reboot your system, because you have said that your laptop would not come back from sleep mode, so i think the system has broken , just a advice
Did any body have the same problem I got? My HP paviliion DV5 went to sleep mode and did not came back. How can I stated back because it only gets the DVD drive on and the speaker, but they dont work. Tryed every thing I know, like disconnecting from power, both baterry and cord, but to no avail. HELP PLEASE.