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Monitor how the occasional black screen thing?

Users questions: LCD, occasionally black 1, after 23 seconds after the general re-lit, has been dark at times, display lights turn yellow. The computer did not respond, long press is off. This phenomenon, after the computer power may arise after the first boot, when the black screen after a close re-open the computer normally does not Another place on my computer has the following symptoms, do not know whether the interaction between. 1. I boot the computer motherboard occasional alarm, the first TWO SHORT, followed by 56 ring, the average interval. Rung on July 8 after the sound stops. Computer does not start. Then unplug the power, then power off for a while, it smoothly Do not press the power button the computer automatically opens, enter xp; not goes well, persistent symptoms. I use the old motherboard MSI 845. 2. I always shut down the computer, you must power off to the next open. Otherwise, if the shutdown does not power off, then press the power button, the host can not start, no No sound, display and no signal. Ask me why. These two symptoms are looking for? The second is that the computer has been purchased it from. In 2045, and since there is no serious problem has been the use of no control. The first case emerged in recent months. Have intensified the trend. Sometimes even the power off four or five times Will not work. Please pop star. Thank you! Seemingly downstairs master! ! My computer is still easy to hang, usually dead after boot time, power failure re-open general no problem I do not know who is 7,777,771. May be the memory problem, my desktop had the same symptoms appeared, another other memory shall see is No change 2.cpu fan problem, there are many fan questions, first, the aging will lead to cooling fan, for a high-power fan, there is the cpu fan and the cpu that the layer of silicone between the aging, poor thermal conductivity suggest you first for the memory, because the simple, if the problem is not solved, the replacement cpu fan is still the main problem I also added under the aging machine: If this situation occurs particularly frequently in the summer, and now it was getting cold, and fewer problems, we can certainly fan the problem. 5 years with a fast computer that changed, not the more uncomfortable to be ah:)
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