Dark screen on startup( screen is lit but nothing is displayed)

Question

I was working on a paper on my computer( a year and half old) when it abruptly shutdown without any error screen(BSOD). I turned it on after and the screen was lit with all lights on and blinking( wifi, hdd, cd). The wifi light was on but it wasn't white- indicative it hadn't boot into an OS yet( I am running dual OS- Ubuntu 14.04 and Windows 8-primary). I was lucky for the screen to turn on to normal as I kept turning the power on and off repeatedly. I decided to boot into Ubuntu thinking the problem was from a driver issue on Windows. It was working normally about an hour and then I noticed a bizzare discoloration of the screen, a rapid blinking of the screen and finally the screen freezing entirely- I could move the mouse after this. At this point, (I was suspecting a graphics card defect not driver), so I turned off the computer and tried to turn it back on. The screen persistently stayed lit(Hp logo on the back was lit too) but with no visual display. I then connected the laptop to a secondary monitor using both HDMI and a VGA cable. The TV displayed no visuals from the computer in both instances. Lastly, the screen randomly turned on in my process of repeatedly powering off and powering on, but it appeared completely disclored and distorted. It was always in very low brightness. I continued to boot into windows 8 but just before the login screen I got a blue screen of death. The screen hasn't displayed visuals since( always stays lit at startup). I've never dropped this laptop before so I hope you guys could be of help because my warrantly recently expired.

Answer 1

Hi @Yussif_Hamis ,
Thank you for visiting the HP Support Forums and Welcome. I have read about your HP ENVY 17t-3000 CTO Notebook and getting a blank or black screen on startup. Try performing a hard reset.
When performing a hard reset please note remove any and all USB devices. Disconnect all non-essential devices.
You can do a system restore. System restore will help if something automatically updated and did not go well on the Notebook. This could be a graphic drivers issues as you can not see it on a Monitor. 
You could restore the BIOS with this document selecting the reloading the BIOS default settings which should resolve the issue.
Hope this helps.
Thanks.
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