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No BIOS after failed upgrade: You might have a solution to a failed BIOS upgrade on a HP Elitebook. Old BIOS was backed up but when flashing started, the laptop suddenly went dead even before it finishes the task. (I suspect a CPU overheat that automatically triggered the swift shutdown) Is there a procedure for putting BIOS back into the motherboard somehow? Thanks, Ren

Hi, Try a power reset. Remove the battery and then press and hold the power button for 30 seconds to drain any residual power from the laptop, plug in the charger (leave the battery out at this stage) and try to start the laptop. If it starts allow it to boot to the Windows desktop, wait until the HDD activity settles then shutdown in the normal manner, switch off the charger, replace the battery, switch on the charger and try to start the laptop. If the power reset doesn’t work try removing /replacing the laptop’s RTC battery to see if this restores the BIOS to a default condition. (Just disconnect the battery’s cable connector from the motherboard there is no need to actually remove the battery itself) Here is a link to the service manual for your laptop. Scroll to Sect 4-39 to view the necessary pre-requisites and then the procedure to remove the RTC battery

First things first, do you have an extra monitor to plug the latop into, if so plug it in via VGA or HDMI. When booting up does the laptop, screen display? If so, use the oppurtinity to upgrade your drivers. You may also have to factory reset it, if the problem persists, hopefully you backed up your date. Keep me posted.

Have you tried this fail safe recovery video? https://www.youtube.com/watch?v=qpiGUojt

remove battery and hard disk first with clean ram into addition ram insert step 2 : first power on the laptop to see display on or not (check) if On laptop will applied (step 3 method) step3: power cable insert first Next Insert the USB flash drive with the BIOS file into an available USB port on the notebook. Press and hold the Windows key and the B key at the same time, and then press and hold the Power button for 2 to 3 seconds. note: On some notebook models, it might be necessary to press and hold the Windows key and the V key. any doubt watch this vidoes : https://www.youtube.com/watch?v=zjAZ0DTX… then will not on laptop step 4: buy sp bios flash toolskit and learn applied bios flash