i tried to install my 2 os, windows/ubuntu, on a new m.2 ssd that i bought since it is more faster than the hdd, i put the m.2 inside the computer and it work fine i boot from the cd, all ok, and i install windows first on the ssd, everything ok the install start, but after the machine restart the first time a boot menu show up and the only options where ubuntu and windows boot manager i tried all and the screen goes black and then back to the boot menu, i remove the ssd and then only the original hard driver apears and no ubuntu or windows manger, both the hard driver and the m.2 work fine and i tested both on other computer, the thing is no only that boot menu/app menu show but the hdd is mark as disk1 with no name and i cant boot from the cd or usb, also when i try legacy mode the screen goes black and i need to remove the cmos or internal bios battery to access the bios again. Thx for the reply,i have a lenovo b5400 and i will try to explain my problem in more depth.

Leave your laptop alone for few minutes and it will reboot on its own, if not then simply remove and replace the battery and turn it on and keep your fingers crossed.

Connect the Power source, Press and hold “fn” key + “R” and while doing so hit the power button and wait for 5 seconds until you see the pen drive blink and the fan running.

Turn off your laptop, disconnect the power source, plug in the USB stick.

Once your USB Pen Drive looks like this, you are ready to go.

exe (Use 7-Zip) file to obtain the “ bios.wph” file for your model. “ bios.wph” included in the zip is for G450 ONLY, If you have a different model make sure to REPLACE the included file with the “ bios.wph” file of your model, download the BIOS file specific for your model from the Lenovo website and extract the downloaded. If you have any other Lenovo model kindly read the note below)

Copy your bios with name “ bios.wph” (BIOS file differs for each laptop model,The one included in the zip is for G450 ONLY.

Copy the files “MINIDOS.SYS” and “ PHLASH16.EXE” that are present in the same folder as the tool to USB Pen Drive.

Choose “YES”,and hit start again and exit the tool.

Click the “Start” button wait until this message pops up and click OK (Do not close WINCRIS.EXE).

Once the application opens, select the formatted USB stick.If it doesn’t run and give an error try to run it in compatibility mode like shown below. Download the Phoenix crisis recovery tool – Link (UPDATED 6th July, 2016).Let’s get started, You need to download a few files and a pen drive to get started to fix bricked Lenovo BIOS.

Lot of the recent updates of the BIOS of Lenovo Laptops caused the devices to get bricked, We figured out a fix for the Lenovo BIOS Failure.

Lenovo update bios serial number