Please register or login. There are 0 registered and 1271 anonymous users currently online. Current bandwidth usage: 326.30 kbit/s January 19 - 06:56am EST 
Hardware Analysis
Forums Product Prices

  Latest Topics 

More >>


  You Are Here: 
/ Forums / Monitors /

  LCD Monitor Blinks On and Off 
 Date Written 
James Barrows May 06, 2011, 01:10pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: May 06, 2011, 01:14pm EDT

Replies: 4 - Views: 40091
Hello all,

I've recently encountered an annoying problem with my display. It blinks off for about two seconds and then the display reappears again. I've never encountered this problem until just recently. Before that, everything was fine.

If I remember correctly, I think the problem started when one day I couldn't get the monitor out of sleep mode after it was sitting idle for a while. I would wiggle the mouse and press keys and the monitor menu information would pop-up but it would then say no device detected from either connection and it would go back to sleep.

I think I eventually shut down the system, switched the cable to another connector on the same gpu, restarted the system, and crossed my fingers. It worked but I think that's when the random, infrequent blinks started. I later switched the cable back to the original connector and the monitor worked but still blinked.

It also blinked before I updated the Geforce driver. It started under 266.58 and now it still blinks under 270.61.

I have a HP w2207h LCD monitor and two 1gb EVGA GTS 250's in SLI (the good model, not the crappy 250's by EVGA... not that 250's are great to begin with, lol) using Windows 7 64 bit.

Before I begin, here is a brief summary taken from Speccy:

Operating System
MS Windows 7 Ultimate 64-bit SP1

Intel Core i5 750 @ 2.67GHz 29 C
Lynnfield 45nm Technology

8.0GB Dual-Channel DDR3 @ 659MHz (9-9-9-24)

ASUSTeK Computer INC. P7P55D DELUXE (LGA1156) 30 C

HP w2207 (1680x1050@59Hz)
1024MB GeForce GTS 250 (EVGA) 43 C
1024MB GeForce GTS 250 (EVGA) 45 C
ForceWare version 270.61
SLI Enabled

Hard Drives
488GB Western Digital WDC WD5001AALS-00L3B2 ATA Device (SATA) 25 C
977GB Western Digital WDC WD1001FALS-00E3A0 ATA Device (SATA) 26 C
977GB Western Digital WDC WD1001FALS-00E3A0 ATA Device (SATA) 26 C
488GB Western Digital WDC WD5001AALS-00J7B0 ATA Device (SATA) 25 C

Optical Drives
ATAPI iHAS124 Y ATA Device
ATAPI iHAS124 Y ATA Device

VIA High Definition Audio

It blinks somewhat randomly but I've noticed that it happens more frequently while playing games (frequently as in: sometimes only 5 minutes between blinks). Also, it usually happens (in Starcraft 2 for example) when I jump to a new view on the map, or if I'm at a view with a lot of units or actions, like a battle or a densely populated mineral line of workers.

If I'm not in a game, it blinks almost never; though a little more frequently if I'm browsing the web or watching a video.

I checked all connections and even blew air over some of them to make sure there's no dust inside. I switched my HDMI/DVI cable to another DVI slot on my gpu and it still blinked every now and then. I reinstalled the latest gpu driver and the latest LCD monitor driver.

I eventually reformatted my system drive and reinstalled everything with the latest drivers again (all drivers were up to date before the reformat as well) to see if a fresh, squeaky-clean system would help. It didn't.

Oh, I also cleared-out the dust from the intake vents on my Antec Nine Hundred 2 case in case heat may have been a problem (though usually my case is decently cool). I don't overclock anything and I always keep my fans blowing full force. I even took out both gpus and blew air thru them and thru their little circular fans to remove all of the dust from them too. Still getting blinks.

Lastly, I tried rolling back my driver from 270.61 to the next latest driver 266.58. I fired-up a game of Starcraft 2 and it still eventually blinked.

What are the most common causes of the display blinking? What could it be a sign of? Is my monitor dying; due to capacitors or the backlight? Is it more likely my gpu's dying off? How do I test these things? It really sucks... I don't have any spare systems, monitors, or gpu's to test things out.

Anybody have any advice? If more specific information is needed, please ask for it.


Want to enjoy fewer advertisements and more features? Click here to become a Hardware Analysis registered user.
john albrich May 06, 2011, 05:11pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: LCD Monitor Blinks On and Off

Since you said you had no other system to work with, and I assume you have no other adapter to connect to on the same system...

It's POSSIBLE your monitor has a built-in self-test capability. This will generally consist of the monitor displaying a series of patterns/colors and can run until you turn it off...which would rule-out the functioning of the monitor itself if it passes. It would not rule out a connector problem.

This is usually activated when the monitor is disconnected from the system, by pressing one or more of the buttons on the monitor while the power-on button is pressed, or when the AC power is plugged-in.

A self-test mode MAY also be available in the OSD menu.

It varies from monitor to monitor and manufacturer to manufacturer.

If there's nothing in your manual about it, check the internet for your model or SIMILAR models, and ask your manufacturer how to activate the self-test.

However, keep in mind it may not have that capability.

Also, activating the OSD menu and KEEPING it displayed may also provide insight as to whether the display is at least capable of displaying something continually. You may have to keep pressing a button every few seconds to keep the menu active for as long as you feel is necessary (e.g. 10-20 minutes?).

mothow May 06, 2011, 10:51pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: May 06, 2011, 10:52pm EDT

>> Re: LCD Monitor Blinks On and Off
Evga makes the best nvidia cards

ASRock Z97 Extreme 4 / i7 4790K / Corsair H80i / 4x4GB Crucial Ballistix Smart Tracer DDR3 1600 / 1TB Western Digital Caviar Black / 240GB Mushkin Chronos Deluxe SSD / 2x Evga GTX 670 FTW 2GB in SLI / Sound Blaster Recon3D Fatal1ty / Corsair HX1000w
James Barrows May 07, 2011, 09:22am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: LCD Monitor Blinks On and Off

Thank you very much. When I get a chance to I'll disconnect my monitor and see if it has a self-test mechanism. I already went thru the OSD and the feature is nowhere within it. I also downloaded the manual and it didn't mention anything about a self-test. I'll just disconnect it from the PC and hope for the best.

Also, I forgot that I could probably just plug it into an old laptop I have laying around here. I'll just browse the web with it, play videos, and see what happens.

I'll post my results.


I agree. All of the Nvidia cards I've ever owned have always been EVGA. I don't trust other brands and I've never had a problem with their gpu's so far. <recalls current issue and knocks on wood>

Perhaps my comment on the two EVGA gts 250's was a little confusing. On Newegg there was actually two versions of this gpu, both made by EVGA.

These are the ones that I have:

These are the ones I avoided (based partly on user reviews):

john albrich May 07, 2011, 10:18am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: LCD Monitor Blinks On and Off

Here's some detailed "how-to" self-test info for a Planar display I had some time ago...

Another display I had required that a specific button be depressed when you plugged-in the AC power cable.

These were not documented features. As I recall, I asked one manufacturer how to conduct a self-test/diagnostic on one display and they gave me the instructions.

However, for the Planar display I found a similar model on-line for which some user had discovered a self-test mode. I played with different button combinations and found even more self-test modes for the model I had.

Write a Reply >>



  Topic Tools 
RSS UpdatesRSS Updates

  Related Articles 

A weekly newsletter featuring an editorial and a roundup of the latest articles, news and other interesting topics.

Please enter your email address below and click Subscribe.