H233H monitor cycles through VGA HDMI Digital modes

My H233H recently started cycling through VGA / HDMI / Digital modes searching for a signal. The screen goes black every time the monitor starts the search cycle. Running Windows 7 32-bit.

I bought a new VGA cable, so it is not the cable.
I bought a new graphics card, so it is not the graphics card.
I have the most recent (and only) H233H driver installed, dated 6/12/2009.

Rebooting the system alieviates the problem for several hours. Then it starts cycling through the monitor modes again. The problem makes the monitor unusable.

I suspect there was a Windows update which created an incompatibility issue with the driver. It would be nice to have a driver that's not four years old.

Any suggestions anyone?

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Dsurian

Suggestions might seem a bit silly, but:

Try making absolutely sure the connection is as tight as possible - a monitor will sometimes cycle through inputs if you disconnect/reconnect a cable, and it may think that's what is happening if a cable is loose.
Try a different cable - most monitors and graphics cards have VGA/DVI/HDMI - whatever one you're using now, try using a different one (on both the monitor and card).
Make sure there's nothing 'on' the input button. If it's touch sensitive, dirt or some such might cause this. (really reaching, now...)
Lastly, monitor's driver shouldn't matter that much - it's not like it will stop working at all if it doesn't have the driver. Try uninstalling it and see if that helps...