GeForce 275 GTX no low resolution

[Brad M]

Hi all,

I've recently updated my Dad's computer for him from XP to Windows 7 x64. The compatibility tool mantioned I shouldn't have any issues so I gave it a shot.

As it turns out, I have run into an issue .. The display cannot use any 1280 x XXX and any below resolution settings. What it looks like is snow with some major vertical and horizontal sync issues. I've never seen this before and I think/assume that this behaviour is odd.. I've searched around on the net for the last few days to no avail. I've uninstalled and reinstalled the nvidia driver (see 1.jpg). There are no device conflicts (see 2.jpg)

The troubleshooting steps I've done so far are:
ACTION:- replaced both video card (I put on the drivers for the new card) and DVI cable.
RESULT:- I have had no joy as same problem persists.

ACTION:- uninstalled the display adapter driver altogether.
RESULT:- Before the required reboot I could see low resolution.. ie the mandatory 640x480.. so this leads me to believe it does work and will again, somehow..

ACTION:- loaded into safe mode to see if the 640x480 worked in there
RESULT:- It did

ACTION:- Loaded windows 7 normally. The card was detected by Windows 7 and automatically installed a generic driver (I think)
RESULT:- I have had no joy as same problem persists.

ACTION:- Installed the latest NVidia driver
RESULT:- I have had no joy as same problem persists.

Given I have replaced the video card and the cable, and the fact that I can see low resolutions when no drivers are installed, I am assuming that there is a software problem??? Another thing backing that theory up is all this was working in XP 32bit.

Can any of you smart and helpful people offer a solution or at least something or some direction in which I can look for a solution? I am stuck.

Thanks in advance for any help.

Brad

 

[Impulse Fire911]

snow? i would assume that its some sort of artifacting on the cards part maybe... sometimes the newest drivers are a bit dodgy and not perfect so try to find some older versions. also maybe try to reseat the card into a different slot? these are all the tips i can give, sorry lol
also, when no drivers are installed it might be using your built in graphics card on your motherboard for the low resolutions

 

[Brad M]

Snowis like when you're between stations when tuning a TV. SSSSHHHHHHHHHHHHH is often accompanying the 'snow'.

I'm downloading an older driver so I'll give that a go first. If that doesn't work, I'll reseat the card in a different slot if it has one..

Thanks for the reply.

Brad

 

[Brad M]

I've managed to narrow it down.

There is a refresh rate issue going on it seems.

On the native resolution, (1920x1200) the refresh rate is 59Hz. On the lower resolutions, that changes to 75Hz. Whenever it changes to 75Hz I get the problem.

This normally wouldn't be too much of an issue as my Dad doesn't usually frig with resolution settings.. but.. he does play games. The games he has here (primarily Command and Conuer ones) obviously do change the settings. Do you know where there might be a setting that will remove all unsupported monitor refresh rates? This is so when he starts up his games it will use the 59Hz refresh rate.

Many thanks for any information.

Brad

 

[Impulse Fire911]

usually in win 7 you can change the refresh rate and even in games. some dont tho :/
try to go to into your nvidia control program and see if its possible to set it to constant refresh rate that you want it to be