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Windows 7: Dual monitor, one keeps flickering, help please!


01 Feb 2012   #1

Windows 7 Professional 64-bit
 
 
Dual monitor, one keeps flickering, help please!

Hello guys, I recently got a problem with both of my monitors which are samsung SMBX2050 (LED), as the main, and SyncMaster 2033sw. My OS is windows 7 professional 64-bit with Intel Core 2 Duo E8500, 4GB of RAM and my VGA card is NVIDIA GeForce 9500GT and running in 1600 x 900, true color, 60 Hz. It has been happening since 2 days ago when the main (LED) one suddenly flickers which my screen goes to the LCD syncmaster one and I need to go to screen personalization and click 'Detect' to make it back to the normal. After a while about 5 mins, it flickers again. The last time when this problem occurred, I was watching TV through windows media centre and maximised the TV on my LED screen, which I normally use to play it on my LCD (second monitor) for about 2 hours, I don't know whether this caused the problem or not. And secondly, I was doing some cleaning with mini vacuum cleaner to clean all of the dust from the CPU's casing without opening the case. I am currently using the LED one, without the LCD one as my second monitor, and no problem appears up to now. Any idea how to solve this? It would be greatly appreciated! Thanks! By the way, I have never done any overclocking before, should I go to BIOS and check about it?

My System SpecsSystem Spec
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01 Feb 2012   #2

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

hi and welcome to the forums

first off my advice cleaning with a vacuum cleaner is not a wise thing to do it will cause static and could possibly cause damage to electronic devices in the case.
its always best to shut down the pc pull power cord out press on/off switch for 8 seconds (discharge power from psu and m/b) and use the proper air dusters in a can to clean inside the case there are retailers you can buy cans from for a decent price (i use amazon for mine 10 for 4 x 400ml.)
have you updated the graphics card lately? if not go to NVIDIA Drivers - Download NVIDIA Drivers website and get latest driver/software for your model.
also worth re-seating the graphics card (shuting pc down turn off power pull plug out press power button open case touch non painted part of case to discharge static from yourself ! pull card out then re-seat it close case up reconnect power plug turn on pc)

How to clean your computer link >>> http://goo.gl/USNi
My System SpecsSystem Spec
01 Feb 2012   #3

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

here is the latest driver for you (please double check though This driver package supports GeForce 6, 7, 8, 9, 100, 200, 300, 400, and 500-series desktop GPUs as well as ION desktop GPUs.)

NVIDIA DRIVERS 285.62 WHQL
My System SpecsSystem Spec
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01 Feb 2012   #4

Windows 7 Professional 64-bit
 
 

Hey man, cheers for the help. I did what you said which was plugging out the power cord and turn off my electricity plug for few seconds. It somehow worked and my computer did some flickers just now but after 5 mins it is all good I guess. Since, I am about to work now, I will see what is going to happen after I use it tonight. Regarding with the driver update, I just checked through the driver update under the driver properties and it says my driver is up to date. Should I just follow this or go straight away to the NVIDIA website and download the update?
My System SpecsSystem Spec
01 Feb 2012   #5

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

not a problem helping you out. go to the link i gave you for NVIDIA drivers and download and install it will be the official one for your card NVIDIA DRIVERS 285.62 WHQL
it will reset the card settings for you and adjust the settings for the refresh rate (i think this is why you have flickering)
My System SpecsSystem Spec
01 Feb 2012   #6

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

and also check your monitor connections and on the pc i normally unplug and replug check the pins in the connectors and make sure they are not bent etc
My System SpecsSystem Spec
01 Feb 2012   #7

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

Quote:
Refresh rate, response time, flicker and motion-blur

There seems to be a lot of confusion and mis-information on these topics on the web; here's my clarification...

Refresh rate is the rate at which the electronics in the monitor addresses (updates) the brightness of the pixels on the screen (typically 60 to 75Hz). For each pixel, an LCD monitor maintains a constant light output from one addressing cycle to the next (sometimes referred to as 'sample-and-hold'), so the display has no refresh-dependent flicker.
There should be no need to set a high refresh rate to avoid flicker on an LCD.

Response time relates to the time taken for the light throughput of a pixel to fully react to a change in its electrically-programmed brightness. The viscosity of the liquid-crystal material means it takes a finite time to reorientate in response to a changed electric field. A second effect (which has a rather more complicated explanation) is that the capacitance of the LC material is affected by the molecule alignment, and so if a step change is brightness is programmed, as the LC realigns the cell voltage changes and the brightness to which it settles is not quite what was programmed. Unless 'overdrive' (which tries to pre-compensate for this effect) is employed, it may take several refreshes before the light output stablises to the correct value. Response rate for dark-to-light is normally different from light-to-dark, and is often slower still between mid-greys. VESA and others define standard ways of measuring response time, but a single figure rarely tells the whole story.
Manufacturers 'response times' rarely tell the whole story.
Unless combined with a strobing backlight, response times much below 16ms are likely to be of only marginal benefit, owing to more-dominant 'sample and hold' effects (see below),

The visual effect of motion blur is self-explanatory and it is fairly intuitive to realise that a slow pixel response-time will cause this problem. What is less obvious, but at least as important in causing motion-blur, is the 'sample-and-hold' effect: an image held on the screen for the duration of a frame-time blurs on the retina as the eye tracks the (average) motion from one frame to the next. By comparison, as the electron beam sweeps the surface of a cathode ray tube, it lights any given part of the screen only for a miniscule fraction of the frame time. It's a bit like comparing film or video footage shot with low- and high-shutter speeds. Motion-blur originating from sample-and-hold in the display can become less of an issue as the frame (refresh) rate is increased... provided that the source material (film, video, or game) contains that many unique frames. For LCD TV there is significant interest in the industry in strobing (flickering!) or the backlight deliberately so as to reduce sample-and-hold motion-blur; the manuafacturers have various tradenames for this, including Samsung's LED motion plus, Philips' ClearLCD scanning led backlight, etc..
LINK >>> LCD monitor technology and tests
My System SpecsSystem Spec
01 Feb 2012   #8

Windows 7 Ultimate x86
 
 

Quote   Quote: Originally Posted by brianzion View Post
touch non painted part of case to discharge static from yourself !
Preferably the housing of the PSU. Only you should do that while the power cord is still attached. Only then will you be properly grounded !!

-DG
My System SpecsSystem Spec
01 Feb 2012   #9

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

Quote   Quote: Originally Posted by SledgeDG View Post
Quote   Quote: Originally Posted by brianzion View Post
touch non painted part of case to discharge static from yourself !
Preferably the housing of the PSU. Only you should do that while the power cord is still attached. Only then will you be properly grounded !!

-DG

thanks for the advice i have always used a antistatic wrist band myself but not a lot of people have them i always have been told and i have read if you don't have a wrist band touch a unpainted part of the pc when you have unplugged it, also don't walk on carpet then start working inside pc and place the pc on a wooden bench.
My System SpecsSystem Spec
02 Feb 2012   #10

Windows 7 Professional 64-bit
 
 

I just finished installing the driver, unplugged and plugged both cables to my CPU. All goes okay I guess up to now, I tried both browsing and watching TV at the same time and it is all good! Thanks Brian for the help!
My System SpecsSystem Spec
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 Dual monitor, one keeps flickering, help please!




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