I've got a 6570b. The screen goes dark when the power cable is plugged in, but only when the battery level is below 93 percent. When the battery power is recharged above 93 percent the screen flickers back on. It operates fine without the power cable plugged in. This is a software issue. I wiped the hard drive and reinstalled the system and it worked fine for about a month. Then it started doing it again. Help.
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