How to set 1600x1200 resolution on non-PnP monitor?

Question

Windows

Hello. I rented a VPS with win7 64, there is a "standard graphics adapter" and a "non-PnP monitor". I want to put a resolution of 1600 by 1200 there, but it turns out only 1280 by 1024. Special. the program shows that the adapter supports this resolution. + on another dedicated (this, however, was not a vps) with the same adapter and monitor, it turned out. What can be wrong?