Alright, first you need to understand what those numbers mean. The 32 bit monitor refers to the number of colors it can display, and has no bearing on the specs that the computer hooked up to it needs to have. Did you install the proper 64 bit drivers for your GPU and monitor if necessary? 64 bit operating systems requires 64 bit drivers and if you didnt install the right driver for your GPU or monitor it wouldnt be able to display properly. Generally monitors can use the standard plug and play driver and do not require their own.