Hi all,

Qeird problem with a monitor.
Had my main PC running Vista SP1 and the system disk died. No worries, backups aplenty, and took the opportunity to install Windows 7 Ultimate instead.
However, my 3rd monitor won't play ball. Running a pair of nVidia 9600GT cards, and the second one just has one desktop to output - which it has done well for ages, at 1280 x 768 @ 60Hz.
This is fed to a high quality VGA Amp/Splitter, which in turn serves the 3rd monitor on my desk and also my 43" plasma TV next door in the living room, the latter on a 15m high quality VGA cable.
It's a old but great plasma, so no HDMI for PC, only a D Sub. Results are superb, when it works, with only slight tearing which is unfixable given its analogue nature.

However, in this setup, for some reason, Windows 7 has made it go weird. When I set the output to the above spec, the TV says 'Input not accepted' which usually means the resolution is too high for it to display.
The above resolution is the highest it will accept.

This confused me, since it looks fine on the 3rd monitor on my desk, and the aspect ratio is correct. However, when I delve into the monitor menu and ask it to display the actual signal it's receiving, it shows up as 1280 x 1024 @ 60Hz.
This isn't true, it's outputting the correct 1280 x 768 but the signal isn't coming through as such - the monitor seems to display it fine as 1280 x 768 but claims it's receiving a 1280 X 1024 signal, and TV won't accept it all.

I've tried lots of things, both the Microsoft Windows 7 drivers it uses by default, older version of the nVidia drivers and control panel, but nothing I try works. It's the same problem.
Now this is the exact same system that used to work perfectly (I only opened the case to swap out the hard drive) so nothing's changed.
So WTF?

It seems I'm missing something, or else Windows 7 isn't capable of doing this right?.
Any ideas?

Thanks all,

have you tried the vista drivers that you were using as most vista drivers will work on win7 ...

I did think of that, but I don't know the version number of the driver I used since the old Vista disk won't work properly.
I get sporadic access to the disk in an external caddy. If I can get in, which driver dll might give me a version and wehre might I find it?

Thanks,

Try to be careful with Vista drivers - I've had one bork Windows 7 before (the offending driver then had to be rolled back via safe mode to stop Windows 7 blue-screening during start-up).

after deleting the current driver via the device manager use the device manager to install the required driver from the vista CD
but as stated most drivers work, not all ...

If I can access the Windows folder of my old drive, anyone know which dll file will give me the version number of the old nvidia driver that worked perfectly? (Vista)

Thanks,

Now it gets weird!
Same hardware, and I decided to chuck in a different disc and try Vista.
Vista SP1 Ultimate, and get this - the same driver that didn't work with Win 7 and it works perfectly.

So, in this setup, Windows 7 doesn't output the correct res, on the exact same machine that Vista does.
Where on earth do I start with this?

Thanks,
Diz.