After running fine for a couple of years, my computer has developed a strange problem. When I turn it on everything lights up as normal and the fans start spinning for a split second and then it goes dead for about one second. After this, without me doing anything, it all lights up again and loads normally except my bios is reset.
Is this likely to be a power supply problem? My friend suggested it could be caused by the motherboard battery failing but I'm sceptical about this.
The above problem has been posed before and the originator solved this with advice using options in his BIOS which do not appear in mine - or al least I cannot find them. My board has an AWARD Phoenix BIOS and I have tried the 'Load Fail Safe Defaults' and the 'Load Optimized Defaults' options both of which have no effect on the problem.
If having set the Date and Time settings in the BIOS and booted up Windows, I then hibernate and then restart after a short interval the system reboots with no problem and the date and time are retained showing, I think, that the mainframe battery (which I replaced when the problem first occured) is OK.