I upgraded from Windows 7 Home Premium a few months ago but had to do a manual upgrade to my HP Pavilion All in One. All worked OK at first but now I have a persistent problem with shut down and subsequent start up. I shut down normally and then most times the PC starts up some hours later but not as far as the log in screen. I have to hold in the power button to then close the PC. Then it boots up normally. On those occasions when the PC does not try to start up I only get to the same state as mentioned and I have to manually power down then boot normally.
i have checked power options but can't see any thing wrong.
Any ideas?