HP screen illuminated but blank on start up

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Lisasmx Posts 2 Registration date Monday October 26, 2015 Status Member Last seen March 23, 2016 - Mar 23, 2016 at 10:47 AM
hi everyone

My laptop did the black screen thing where laptop powers up but screen stays black and i did the suggested battery removal and start button hold, this worked the first two times then not again, i checked the screen on another laptop and was fine so not the screen, someone suggested motherboard faulty so i purchased a refurbished one but this would not power up at all, i put the old one back in and this time the screen came on but no writing has started, any help would be welcome.
lisa