Windows is using the "auto-detect" driver program to get the monitor drivers, CRT monitors (I assume that is what you mean by "old") don't need drivers. The drivers being found are corrupted. I would recommend manually installing the necessary drivers for the 953bw while using the old monitor then do a dual-screen test (most new graphics cards have 2 outputs on the back and with Windows you can run two or three monitors at a time).
If it works, awesome, if not, I am just as puzzled as everyone else...
Hope this helps,