Lenovo Yoga Flex 2 :: 15D - Boot Fail After Latest BIOS Update
Dec 11, 2014
I have a severe problem (I guess) after the latest BIOS Update. Windows 7 freezes during startup.
I own a 64-bit Lenovo FLex 2 15D with AMD A6-6310 and R4, 4GB RAM and a SSHD (8GBSSH). I purchased it without OS and installed Windows 7 - which worked fine so far.
I yesterday updated the BIOS with version 9FCN23WW (for Win7 and Win8), the latest BIOS update. A mistake, it seems.
After Reboot, I first had to disable Secure Boot in the BIOS, because it would not let me boot at all. I figured out how to get into the BIOS-Setup to disable this (press Enter 2x, press Tab when in the Boot Menu to access the "Apps Menu", then "SETUP").
Now Win7 begins to start up, but freezes during the startup process (the splash screen with the win flag freezes and looks a bit strange. I used the "protected mode" Windows Startup and saw that the process always hangs when loading "amdkmpfd.sys".
That is basically it.I guess I have to find a way to re-install the previous version of the BIOS.
Now about what I did to fix this (poor, but I tried):
If I try to start from a Win7 installation CD-ROM (actually it is one for Dell PCs, but I guess that is not the problem) and press a key to boot from CD, Windows loads files, shows "Starting Windows" and at a certain point again just freezes. When I -do not- press a key, WIndows Boot Manager shows up and mentions that "Windows failed to start (etc.)" "File: EFIMicrosoftBootBCD" "An Error occurred while attempting to read the boot configuration data."
I can't even boot into Linux on a USB stick, because the Windows "Error Recovery" won't let me when I try (just offers to boot to Win7 in protected mode - it could be that it fails immediately and jumps back to Win Startup).
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Dec 4, 2014
I wanted to do a fresh install but my restore files are in Windows 8 and I wanted 8.1. I used my 8.1 pro disk and created a bootable media for installing using USB. I had to go into the BIOS and change it to legacy before it would see the USB drive. Went ahead and deleted all the partitions then created a single new one for windows. The installation worked flawlessly then I went ahead with the driver installs.
The very first driver was the firmware update. The system updated the firmware without any issues but once it rebooted I only receive the following message "Default Boot Device Missing or Boot Failed. Insert recovery Media or hit any key. The select 'boot manager" to chose a new boot device or to boot to recovery media. When I go hit any key it leaves me with no boot options probably due to them being legacy options. I've tried F2 on startup to get into the bios and change it back to legacy but this never works.. I have also tried F12 trying to get it to let me select the startup drive.
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Dec 29, 2011
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Nov 24, 2013
I have a Yoga 2 Pro. How can I find out if I need to update the BIOS?
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Dec 10, 2013
I just formatted my yoga 2 pro, downloaded the drivers and ran the Bios Update. I followed the instruction on the read me, ran the .exe, clicked next/ok until the laptop restarted and if I'm not mistaken a red menu with a progress bar showed up. At that point I left and when I came back a few minutes later the laptop was turned on, the screen lighting was on but the display was black, the keyboard backlights were also turned on and everything else was off. The lights on/near the power button that signal if it's turned on and plugged to the AC are turned off.
It's been like this for over 30 minutes now, no signs of progress. I'm not very keen on turning off or unplugging the laptop while flashing the BIOS, but at this point there's not much else I can do.
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Am I right in thinking that because System Update is not supported for the Yoga 3 Pro, the new tool for updating the system is the OneKey Optimizer?
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My new Yoga 2 Pro has a secondary display connected through the micro HDMI port. This worked like a charm initially. But after upgrading to newest Windows 8.1 (this is done automatically) it no longer outputs anything to the micro HDMI port. Display and cable is fully functional. But even though the display is powered on, the computer fails to register it and apparently it cannot output anything. Seems like the micro HDMI port is non-existing.
After the windows upgrade I have tried to uninstall / reinstall the display driver. I have also upgraded the Intel drivers to Win 8.1 versions found on the Lenovo support site (including BIOS 76CN38, Intel HD 4400 display driver 15.33.18.64.3496 and chipset 9.4.0.1026). But nothing seems to work.
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Sep 4, 2014
A couple of days ago, and quite some time after the latest BIOS upgrade I noticed that under windows the keyboard and mouse on a unified receiver wouldn't work anymore. I normally use Linux and didn't notice the malfunction because Linux does find the USB and enables it (as seen in logs) and they work.
First I thought it's some weird Windows driver issue but the thing that is different is that when booting (grub) or in BIOS - the keyboard and mouse don't work there as well indicating that apparently BIOS doesn't enable it at boot.
I am now not sure whether the BIOS upgrade did this or something else. Since it works under Linux I can hardly consider it as a hardware problem.
What works under Windows anyway is charging USB devices - so apparently something comes through that port.
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Jun 21, 2014
I purchased a new Flex 2-15 online the past week. The model name shown on the back is "20405". Manufacture date is May 12, 2014. The User Guide refers to a "Novo Button", which is shown in diagrams as being on both the left edge and the right edge near the front. Neither location has a button of any sort. The right edge has a pinhole in the supposed button location. A curved arrow icon is next to the pinhole. I have an inkling this may be some sort of factory reset button. Lacking the Novo button, what is the procedure for accessing the features which the manual says are accessed by pressing this non-existent button?. That is, BIOS, and/or the one touch image backup/restore system?
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Dec 29, 2014
Yoga 13 bought in 2012. Was working fine with 128 GB / 4 GB. Tried adding another SSD and 8 GB RAM (Crucible), and now I get the message "Default Boot Device Missing or Boot Failed. Insert recovery media and select any key."
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Dec 13, 2014
I have recently bought a Flex 2 15 and want to instal Win 7. I created a bootable Win 7 usb stick with the tool from Microsoft and it works just fine. The problem is, no matter what I change in Bios or Boot manager, The laptop doesn't boot from usb. All I get is the normal Win 8.1 installation.
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Jul 26, 2014
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Feb 8, 2013
I have a Yoga 3Pro.... I booted into Safe Mode and now ever time I boot up it goes into SF without me hitting F8? What's going on? It's on my Y3P. What box did I click to cause this.
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Apr 18, 2014
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Jan 14, 2014
I've been having problems with the dreaded "black screen" when starting my Yoga13 (but only somethimes!). To try and narrow it down, as there seem to be so many things that can cause this, I went into the Bios settings from "F2" and setup it up to ask for a "Power on" password before starting windows.
What I have discovered is that when the black screen occurs its BEFORE the Bios asks for the initial "Power on" password, ie I cannot see the box asking for the password and so Windows has NOT yet started to load. To overcome this, I just press the power button to switch off the system, wait 20seconds and then it will usually start.
Once past this, no errors ever occur on the windows side.
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So now when I try to boot - for a quite some time there is a black screen and then a list of boot options pops up:
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So after connecting a usb keyboard I entered boot options and there iv noticed something strange:
Link to image
EC version is messed up.
Keyboard is not working at all and some other things.
On top of that when I'm choosing normal startup the windows "wheel" is turning but its newer getting to boot.
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Dec 13, 2013
I get the error in the Title after i tried to flash the latest BIOS update for the Z510. I can press ok and then get into the boot manager but i cant choose anything there. Also I cant boot from a Disk with e.g. XP on it.
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so today I was lucky enough for Dell to give me the little balloon pop-up in the bottom right hand corner saying I have an update for my BIOS... I download the file and begin the installation.
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I can enter the bios and change the settings, but none of them seem to work because this is the maximum where it will go, the only difference is when I change from AHCI to Compatible mode, it restarts and than I have a blank screen, I have to use the One button Recovery to get back to this one from the picture above...
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Apr 26, 2013
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When I attach a USB thumb drive with Linux, it shows up in the options on the DOS-like boot screen, but selecting it won't boot from it.The laptop is now totally uselss and I'm losing days of time and it's a major problem.
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Apr 15, 2014
I just updated my bios on my Z510, and now the only boot options i have is network boot, something that i don't use. I used the bios update tool that Lenovo is distributing from the drivers page for my PC.
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Feb 24, 2014
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Mar 26, 2014
After the latest system update from Lenovo System update, my laptop T530 doesn't do a successful cold boot. A warm successive boot (with interruptible boot screen) works fine.
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Apr 1, 2014
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After the latest set of updates, my touchpad took to displaying a stationary gray circle/swirl half the time when I tried to move the cursor. Seemed to happen less if I moved very slowly. I turned off scrolling (again), and it's mostly gone away. Is this related to scrolling?
X201s, W7 Pro, 4GB
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I am working a lot in one place, charger always plugged in.
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Jun 5, 2014
I have a Yoga 2 Pro. I pressed the Fn and the +(plus) key to increase some text size. How do I reverse this?
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