Your question

No screen only during 'boot'

Tags:
  • Laptops
  • Windows
  • Boot
Last response: in Laptop Tech Support
May 18, 2017 1:49:07 PM

My laptop (Lenovo Y50 series) shows a blank screen during boot. When Windows starts everything works fine but I can't see the boot screen or (more importantly) enter the bios.

My laptop only has a HDMI port that kicks in during Windows only. So I can't hook up an external monitor but maybe the laptop is 'treating' the built in screen the same as the HDMI port.

I tried a bios upgrade/overwrite but the program boots outside of windows and therefore I have a blank screen and can't start the update.

More about : screen boot

a b D Laptop
May 18, 2017 1:54:44 PM

Hello... as a "simple test"... unplug your boot drive and you should receive a Bio's message and be in the BIO's on next boot. you don't need the boot drive connected to use a DOS BIO's updater. B /

also disable the "fast boot option" when ever you need BIO's keyboard support or easy access to it.
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May 18, 2017 2:00:54 PM

Ironsounds said:
Hello... as a "simple test"... unplug your boot drive and you should receive a Bio's message and be in the BIO's on next boot. you don't need the boot drive connected to use a DOS BIO's updater. B /

also disable the "fast boot option" when ever you need BIO's keyboard support or easy access to it.


Yes, I can get there but the screen stays blank. I can also get 'near' the bios by trying the default keys (F2, F12 or DEL). I know it's there somewhere because the laptop fans are running like crazy and because well, the screen stays blank.

It looks like the screen is turned off. I'm currently googling on 'how to enable HDMI on boot' just to see if it will apply to my internal display too but no solution found yet.
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a b D Laptop
May 18, 2017 2:12:28 PM

I don't know if this will work, but when you are in Windows, go into Device Manager and Disable the HDMI port, then reboot and see if you can see the laptop's screen during boot. It sounds like the computer thinks the external monitor is the primary drive, but as you say HDMI only gets turned on once you are in Windows.

Or as an alternative, check to make sure your laptop screen is the primary monitor.
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May 18, 2017 2:29:09 PM

mjslakeridge said:
I don't know if this will work, but when you are in Windows, go into Device Manager and Disable the HDMI port, then reboot and see if you can see the laptop's screen during boot. It sounds like the computer thinks the external monitor is the primary drive, but as you say HDMI only gets turned on once you are in Windows.

Or as an alternative, check to make sure your laptop screen is the primary monitor.


Thank you but it did not work. By the way, the HDMI port doesn't show BIOS either.

Tomorrow I'll try to connect a HDMI to DVI connector and a DVI monitor. A mini-display was suggested on 'the internet' but I don't have a monitor with a mini-display connector.
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a b D Laptop
May 18, 2017 2:43:52 PM

I am not as familiar with Laptops but I would think the laptop screen would be set up as the primary monitor, unless you changed it for some reason. I don't know if the HDMI to DVI adapter will work if the HDMI port is not powered up until Windows boots up.

Did you try just unplugging the HDMI cable and powering up the laptop?
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