Vista 64 Monitor Problems

Asus / P5k se
January 10, 2009 at 05:53:10
Specs: Windows Vista 64 SP1, Q6600/4Gb
Hi everyone, the following very strange thing is happening to me:

I am running Vista 64 SP1 on a computer with Asus P5kSE, 4gb RAM, and a Q6600 2,4Ghz, and ATI Radeon 2600PRO. I am using 2 22" LCD monitors, with VGA cables and DVI adapters on the graphics card. I have been running this system for 3 months now, and all this time both my monitors worked fine, as STANDARD PNP MONITORS, 1680x1050.

This morning upon bootup only one of them became STANDARD UNPNP MONITOR, and is stuck to standard resolutions going up to 1600x1200, but not its maximum rezolution of 1680x1050, thus the image looks relly wrong. The other monitor works fine, STANDARD PNP, 1680x1050.

I reinstalled the ATI driver, tried to uninstall and reinstall the monitors, rebooted many times, nothing. The ATI Catalyst utility is telling me I have 2 monitors, out of which one it can recognize and give me even the model number on it, which checks on the back of the monitor, but the other one is just a standard vga, and nothing else about it.

I have searched the forum and read another thread, but I believe what is happening to me is different. 2 identical monitors, on the same card, one of them works, one not so well.

Could this be a hardware problem? Is one of the monitors broken? I cannot see other signs other that Vista is saying UNPNP.

The monitors are both PNP and thus have no drivers to install. I am really stuck, my desktop is awful now and I need to get on with a webdesign project...

Any help is hugely appreciated.

Thank you,

Ady

Dude


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#1
January 11, 2009 at 00:28:00
Since the monitors are similar did you swap the monitors?

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#2
January 12, 2009 at 03:42:01
Yes I did. Although now I switched them so many times and fiddled so much with their order and settings in windows and catalyst that now I'm lost as to which one used to go where.

The interesting thing is somehow no matter what I do, the display that's on my right is always the one recognized and the one on my left not. And since I only switched the cables and did not move the monitors, this may be a fault in the video card or the monitor. I'm going to try this monitor on another computer and see what happens and post back some info.

Could a hardware problem cause a monitor not to be recognized anymore? I mean it's not like there's any other sign, such as bad display, bad colors etc.

Ady

Dude


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#3
January 12, 2009 at 06:42:39
What I did to get it working, at least for the moment:

I took another 22" monitor (i.e. not one of my origina 2) and started my computer with that monitor as the only one. Vista saw it as a standard plug n play and let me set up the maximum resolution to 1650x1080.

I then put both monitors back, and thankfully the settings were still for one monitor and it saw that one as plug n play. I enabled the second one and extended the desktop onto it and now it seems to be working, the image is finally crisp and the resolution is fine on both of them.

I hope it will last, though I really think what I did was second hand guess work and the problem may come back. If it does, I'll post again or maybe start another thread.

It would be nice to get to the bottom of this.

Ady

Dude


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