The problem is when you turn on the computer

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This problem arose. When you turn on the computer the monitor flickers. After loading the OC everything is back to normal (all is lost, the image becomes clear). Sometimes starts to flicker when turned on screen saver, and even in games. What is it?
Thank you all for the help)
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7 Answers

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Since the beginning of the video on the display can be seen clear on top of the invisible "window" "Autoconfig", I believe that the monitor is all right.
Based on the fact that flicker disappear when booting OS, cable and connections are also fine.
\r
As I understand it, flicker is either there or not when changing video modes, and therefore the reason for the video card.
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If connected via VGA, then first check the cable.
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I have exactly the same situation was.
Besides, I have also the monitor was beeping in high tones, the problem was
\rthe throttle.
Many have said I need to replace it — that is desoldering and put the new one, but I was afraid.
I also read that the throttle can be "calm" Bay it with epoxy — I also did not do.
Made "on the knee" — took the screw, the sharp end blunted on a rock and twisted into the body of the monitor exactly hitting the ground off end into the throttle and not a lot of twisting with a screwdriver pressed harder the throttle to the Board and everything started to work fine. It's perverse — but I didn't want to carry the monitor in service, there was neither the time nor the guarantee.
Before all this hit to do with your finger (in glove) on the throttle — if it helps — it's all right and you can "press screw", if not then consult with any Radioelektronika.
Success! :)
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Plug to another monitor. If everything is fine then the monitor if no video card.
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On another monitor checked?
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If it is not possible to test with another monitor, try the following.
\r
1. Contact reliability of the connector of the video cable connector on the system unit.
2. Check the condition of the thermal paste between the GPU chip and heatsink.
3. If the video card has a fan for cooling the GPU, then make sure he's okay and he's not clogged with dust.
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so hard to say... need to iron look.
Check the connections, clean out dust...
There can be problems:
1) check the plug
2) to clean dust from none to look at heat and work cooler.
3) pull out a none to clean the slot (sometimes the dust is stuffed, and begin stripes across the screen)
4) in the worst case, the motherboard, the time came...
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