Windows 7 100HZ on windows 7 build 7048?

[bounce]

Hello all , i have a 8800GTS and a COMPAQ P1100 21' monitor (supports 100HZ on 1280x1024 and 75HZ on 1920x1440 - win vista/xp) but on windows 7 build 7048 the maximum refresh rate on every resolution(even 640x480) is 85HZ , what can i do to make my monitor run in 100hz like it runs on vista/xp?
I've installed the monitor drivers but no changes, i even tried different monitor drivers like dell1100 and others but still no change

 

[DVS]

Yes, for me absolutely same problem. How to take 100hz in windows 7?

 

[reghakr]

First, I would download the official RC from Microsoft.

Was this an upgrade or a "clean" install?

Check your driver version and follow this link for the 32-bit Windows 7 driver.

If you're using 64-bit, backup one page and choose that.

GeForce/ION Driver Release 185 WHQL Version: 185.85 Release Date: May 06, 2009