05-16-2019 04:36 PM
Somewhat of a shot in the dark here.
I have a Lenovo p50 - about three years old. It's spent most of it's life in the dock, connected to two external monitors. All good so far.
However, it seems I have an issue with the discreet graphics GPU - there is no video from the built in LCD at all. The LCD has been previously replaced and swapping it for another one which i know works makes no odds. the machine is useless out of the dock. That's not OK, but i can deal with that until i replace the machine.
But for a couple of days, I am no longer getting any video from the dock outputs either. I can't get the machine to recognise those ports.
The machine otherwise is fine. I am RDPed onto it right now typing this message. I go into device manager in Windows and it reports Intel HD Graphics 530 as the display adaptor. It seems somehow the BIOS has flipped to discrete instead of hybrid.
But of course without the built in LCD, i can't get into the bios (or rather I can't see it!). Does anyone know of anything I can do to get this thing to display the BIOS on my external monitors? Or perhaps force it via windows. I have tried connecting all the various ports (HDMI and DP) on the laptop directly to the monitors and all of the connections on the dock (HDMI, DP, DVI, D-sub) to no avail.
I've also done the whole, take the battery and coin cell battery out, leave it for a while, press the power button etc. But as I can't see the display after POST, i can't tell if that bios reset has occured etc.
05-17-2019 08:14 AM
I don't have a P50 to test with, but on most models with Phoenix BIOS you can get the BIOS (from the laptop, not the dock) to display on an external display with one of the ports (HDMI or DP) if you hit a key combination involving the F7 key. It is either just F7 or Fn-F7 depending on other settings, but it just takes a second to try both. If I needed to wager, I would bet it is the DP port, not the HDMI, but I don't remember for sure. Sorry about being a little vague.
05-17-2019 08:33 AM
I've tried that with no luck - the various key combos with both DP and HDMI.
Of course I can't be sure I'm in the BIOS anyway. I think I am as I've hit enter until there is a beep following POST and then F1 to enter the BIOS. very frustrating!
05-18-2019 05:05 AM - edited 05-18-2019 09:26 AM
You might try this sequence to restore default configuration settings:
1. Startup system and hit Enter until you hear a beep
2. Press F1 to get into the BIOS config (I know that you can't see this at all)
3.Press F9 to restore default config (this will put things back to hybrid and use the Intel GPU)
4. Press F10 to save the configuration
Hope that this helps.
05-18-2019 09:12 AM - edited 05-18-2019 09:12 AM
4. Press F12 to save the configuration..
F10 if it's the same as my other ThinkPads. I don't havea P50...
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05-18-2019 09:27 AM
It is F10 on the P50/70. Sorry for the error. Updated the original post instructions. Thanks