Solved PC will not cold boot but ok on restart.

[1vincent]

Hello.
8 days ago i turned on the pc and then my a cup of tea. When i came back the pc had a flashing cursor in the top left screen. I turned it off and then on and then it went as far as the windows progress flash screen and stopped so i rebooted again and after nearly an hour of this i got it working.
There was no blue screen and no error messages apart from 1 about the pc not shutting down properly.
Turned pc off at night time and in the morning the same thing and it has been like that for 4 days.
Thursday i backed up the sata hard drive to a 80gb ide hard drive and then took out the sata drive and put in a 40gb ide drive and reinstalled home premium. It seemed ok but when i went to turn on the pc on Friday morning the same thing happen and the same today.
All that is connected is hard drive,mouse,keyboard,dvd rw,Atheros wireless network card and graphics card which the monitor is connected to.
Thank you for any help you may give me.

 

[1vincent]

I put this in the wrong thread so started a new thread and i will mark this as solved.