Screen Resolution changed by itself

August 1, 2011 at 13:32:13
Specs: Windows 7
My resolution for my 19" screen was by default 1440x...
I used a new longer cable for my screen in order to move it somewhere else.At first everything was ok but sudenly,i opened my system and the resolution is now 1280x1024 as setted from the windows, and the former 1440 x.. option has disappeared.Any thoughts?

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#1
August 1, 2011 at 14:26:00
I also figured that my screen doesnt work in any resolution (higher or lower) than 1480x1024

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#2
August 1, 2011 at 14:47:19
sorry for the corrections..
previously i ment 1280x1024
Here is the problem: My monitor is the VA1916w.I am running win7.This monitor is ment to offer 1440x900 resolution. Instead that i get 1280x1024 and only that as option (i cant have higher or lower than that because the monitor turns black and says OUT OF RANGE)
Thoughts?

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#3
August 1, 2011 at 15:02:17
Is this with a monitor connected to a desktop computer, or a monitor connected to the video port on a laptop or netbook computer ?

All LCD displays have an "optimal" or "native" resolution specified fot them that they look best set to. Yours may be 1440x900. The resolution can be set to other resolutions but the display will NOT look as good - at the very least, the text on the screen will not be as clear.

What you are supposed to do is install the specific drivers for the LCD monitor model, if they're available. Then, by default, Windows will only show the display settings supported by your model.

If you have the display settings loading Plug-n- Play monitor drivers, you can choose settings the monitor cannot display, or if it does display, your monitor can be DAMAGED by choosing the wrong settings !

The resolution will not change for a monitor once it has been set unless something else has changed.

Did you change the monitor drivers setting in Windows ?

Did you install newer or older video drivers than you were using before, or re-load the same video drivers, for your video adapter ?

Did you connect the monitor to the same video port it was connected to before ?
.....

How long is the cable ?
It's possible that you may need to use a device to boost the video signal to the monitor.


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Related Solutions

#4
August 1, 2011 at 15:16:03
Here is what happened:
I buy a pc with this monitor i mentioned 3 years ago and i worked with Vista.
Then i loaded win 7 (1 y ago) and it worked perfectly fine at 1440x900 (LCD NATIVE as u said)
One day i bought the longer cable.I use it and everything ok at native res.BUT, next time i boot my system and sudenly---->1280x1204....oups...i reboot...the same....i use the short cable,the old one and....everything ok again....native res again.
Yesterday i did the same...long cable-->ok res-->reboot-->low res--->short cable--->reboot-->ok res.
and without changing anything...today...low res and no way to fix it....
i downloaded nvidia drivers...nothing....monitor drivers (there were only for win vista)...nothing...rebooted 1k times....nothing

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#5
August 1, 2011 at 15:40:11
"Is this with a monitor connected to a desktop computer, or a monitor connected to the video port on a laptop or netbook computer ? "

The latter are likely to have a weaker video signal.

"VA1916w"

Viewsonic VA1916w (home support page)
http://www.viewsonic.com/products/v...

Excerpts...

"1440x900 optimum resolution"
"VIDEO INPUT
Analog RGB analog (75 ohms, 0.7 Vp-p) "
"WSXGA" - Wide Screen XGA

Click on Downloads

- User Guide
http://www.viewsonic.com/assets/024...

See page 9, 11

If you don't have the CD that came with the monitor....

- Drivers - 4 possible downloads - choose Vista
32 bit or 64 bit, whatever your Windows 7 operating system is.

"monitor drivers (there were only for win vista)..."

Lots of things don't have Windows 7 drivers. Vista drivers usually work fine in Windows 7.

"One day i bought the longer cable.I use it and everything ok at native res.BUT, next time i boot my system and sudenly---->1280x1204....oups...i reboot...the same....i use the short cable,the old one and....everything ok again....native res again.
Yesterday i did the same...long cable-->ok res-->reboot-->low res--->short cable--->reboot-->ok res."

How long is the total length of the cable ?

Assuming the video cable has no problem with it's connection, your longer cable is probably sucking up too much of the video signal. It takes more "oomph" to load a higher resolution..If the total length between the monitor and the video port is more than , say, 12 feet, it should be a thicker, heavy duty cable, much thicker than a normal video cable, to reduce the amount of the video signal that is lost in the cable

E.g. Heavy duty...

VGA (family - analog) extension cables
http://www.newegg.com/Product/Produ...
http://www.smartvm.com/vga-and-svga...
http://www.smartvm.com/vga-and-svga...

If you can't do anything about the cable, or in any case, the cheapest way to boost your video signal is to buy a 1 input to two or more output video splitter box and connect that between your monitor and the video port, as close as you can to the video port. The box type all have a built in amplifier. The cheapest are for a VGA connection. You may also need an additional video extension cable, or a gender adapter to change a cable end connector from male to female or visa versa. .

E.g. http://www.newegg.com/Product/Produ...

Note that most of them, if not all of them, are rated for the max resolution they can support.

There also devices that boost HDMI cable video signals.
.....

" downloaded nvidia drivers...nothing...."

Installing newer or older video drivers than you were using before, or re-loading the same video drivers, for your video adapter, can change the default setting the monitor is set to.


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#6
August 2, 2011 at 05:20:45
First of all,Thanks a lot 4 everything.
The long cable is about 3-4 meters long,but doesnt matter any more because all i want now is a way to find the native resolution with the old short cable (included with the screen when i bought it).That is what bothers me....whenever i used the small cable everything was fine...no matter what i had native resolution...
One last thing...if i dont decide to buy anything at all to fix it....and try with what i have, do u think that reseting the nvidia driver to a former version whould have a chance to fix it?
Thanks in advance

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#7
August 2, 2011 at 05:29:59
My friend i a am about t tell you about a miracle :P....after trying for 3 days to fix it, 1 min ago the monitor turned black and got fixed by itself...1440x900 -->native res.......
????????????????????

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#8
August 2, 2011 at 07:27:38
Hopefully it will stay that way, but it's too soon to tell, going by what you have experiernced previously. .

Please answer the question I have asked, twice, that is at the beginning of response 5 .

The more questions you answer, the less time and effort it takes on our part to suggest solutions to your problem(s) and possibly solve it(them).

Obviously your problem is ditrectly related to the cable when it's longer.4 m is nearing the limit for a regular cable or a combo of regular cables,, The most common video cables or extension video cables are often about 6 feet or 2 m long.
.
I have never heard of the resolution changing automatically in that situation before when nothing else was changed - usually the problem is the video looks crappy on the monitor or there is no video on the monitor because the signal is too weak - but that's possible if the longer cable is sucking up too much of the video signal.
And since you did try changing things, that introduces other possible things that may have something to do with your problems.

I used a heavy duty 25? foot VGA extension cable to a monitor, a 1 input to two output video splitter box, and a shorter cable between the box and the video port, with a disabled friend's monitor so she could possibly move the monitor closer to her bed, and there was absolutely no problem with that. There was also a second monitor connected to the video splitter box that used the ~ 6 foot cable that came with it. Both monitors were two different older (4:3 aspect ratio) 19" Samsung monitors that had the same "optimal" or "native " resolution.

Both of those monitors still looked pretty good when they were not set to their "optiomal" resolution as long as the 4:3 aspect ratio of the resolution was the same. I've noticed that is not necessarily the case for an el-cheapo LCD monitor model, e.g. a friend's Acer model looks a lot worse at other resolutions, and there are no specific monitor drivers available for it.
When you have an el-cheapo monitor model, you're more likely to have problerms.


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#9
August 2, 2011 at 07:49:28
Ow,yes, it is a desktop monitor...i answered it earlier but i erased the answer then...i agree with you...it seems the problem is on the cable but since it doesn't get fixed every time it happens,i can't be sure...another thing is that since it was fixed, i didnt reboot the system...so a real test will be to reboot my system and see how it works....in that case i won't use the long cable again....not without a splitter as u said...

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#10
August 2, 2011 at 09:21:30
"Ow,yes, it is a desktop monitor.."

It's obviously an external - standalone - monitor.
What type of computer do you have it connected to is what I asked.


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