From what I can tell this hasn't been asked so I will
Me and a mate have just upgraded my hardware ( RAM and graphics card). When I plugged a monitor into the computer after the upgrades, this was displayed on the monitor:
hf:30khz- 60khz vf: 50hz-75hz current frequency hf 64 vf 60
Now as you can see it's obvious that the current frequency is greater than the accepted frequency. The problem is that I do not know how to change these settings. Any ideas?