UEFI not showing on monitor when booting up

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I used to have a stable system! Now I have issues. The latest is when I boot up my Win 10 PC, there is no UEFI option to press del or F2 to boot into the UEFI – it’s just a black screen until the windows boot sequence starts. So I can’t get to the UEFI options. I had an issue after updating the UEFI, resolved that with help here.

I read on-line that I need to remove the battery from the motherboard for 15 seconds or so to cause the UEFI to reset. Two questions there – the battery is behind the SSD card drives, so I’m reluctant to pull that out unless I’m sure that’s the fix. Plus, when the UEFI is reset does that change all the values back to their original state? Or is it more like a reboot of the current UEFI settings?  The PC is running fine other than not going to the UEFI boot screen.

Appreciate any help, I have tried to use the windows settings troubleshooter option to go to the UEFI, but when I did that the screen essentially went to sleep, didn’t go to the UEFI.

Thanks

rdleib

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Does your system have a second video card or output by any chance? It could be coming through that instead.

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Thanks for the response, Steeviebops, but no, no second video card or other output. I have dual monitors. After the UEFI update and issue, all was well except it was booting the UEFI on the secondary monitor. I went in and changed the iGPU multi-Monitor from disabled to enabled. Now it doesn’t boot the UEFI at all – not on either monitor anyway – so I can’t get back in to see if changing it back would help. Any th0ughts are appreciated.

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Try holding down the F2 anyway.  It might be functional.  Won’t hurt anything if not.

Desktop mobo Asus TUF X299 Mark 1, CPU: Intel Core i7-7820X Skylake-X 8-Core 3.6 GHz, RAM: 32GB, GPU: Nvidia GTX 1050 Ti 4GB. Display: Four 27" 1080p screens 2 over 2 quad.

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In Windows, hold Shift down and click Restart.
Choose Advanced, UEFI settings (or something like that).

cheers, Paul

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Thanks TechTango and Paul T. In both cases, when I tried F2 ( or Del) or booted restart, advanced, UEFI settings, the computer seemed to go to the UEFI boot cycle and promptly went to sleep – or that was how someone on the internet described it, and it is apt. The only way out was to turn it off and back on, which didn’t accomplish anything.

So I bit the bullet and removed all the cables and power, removed the drives, took out the CMOS battery for a minute or two, reinserted it, put the drives back…and nothing! Thought maybe I put the battery in backwards, so did it all again, and thought maybe I didn’t get the drive cables pushed all the way in, but the battery was right. Hooked up everything again, and this time it booted – on my main screen – into the UEFI screen! Had to reset the UEFI settings, loaded optimized defaults, and that was that.

I hate messing with hardware inside the PC case, don’t know what I’m doing. But it came out ok, appreciate all the thoughts, and hope this helps someone else at some point.

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steeviebops

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