I'd try and set that rate manually rather than rely on VGA mode. Try setting it at 60 hz. It could also be that your old Sony has a problem. I'll presume you can see the POST screens and that it will work in some mode.
My trusty 21" Planar monitor finally bit the dust the other day, so i broke out an old but working, Sony Trintron 17" CRT to get me by till I can afford a new one. Needless to say, my Radeon 6770 GPU sent it into 'Out of scan range'.
I said no problem, I'll go into safe mode and reset the resolution/refresh rate so I can mess around in the OS, Win XP. Nope.. same thing again.. hmm that worked in the past and I've seen it suggested so I press f8 again and try Enable VGA mode.. nope same thing. Getting frustrated, I want to play WoW!! Put in an older Video card, same thing. Can anyone suggest my next course of action besides buying a new monitor. I have messed with computers for a while and this one has me stumped.
thanx in advance for all your help