Laptop acer aspire 4530 blank screen [Closed]

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Hello, my laptop acer aspire 4530 screen is blank, all light are on but the screen is blank. how to flash the BIOS with usb flash drive???

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Dear Sir,

Please get through the following instructions in order to have the problem solved.

https://ccm.net/faq/4594-hp-laptop-black-screen-problem

Thanks in advance.