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Hello

 

I have a problem with my friends laptop. The laptop is Lenovo L520 (Intel I5 Windows 7 ...) and the problem is when external display is connected the LCD turns off some times instantly or after 2 or 3 days. if you open display options only external display is detected. If you restart the machine only external works. the main LCD turns back on only when you disconnect external display and restart. I tried different drivers, I played with settings... 

I repeated a lot of Lenovo PC but never i got these problem.  And if any of you guys had these problem i really need some help.

 

Thank you for replying and sory for my english.

 

 

 

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