The BIOS is the software stored on the memory chip on the motherboard. If you have any questions regarding the components on how to clear CMOS on your system, please contact your motherboard vendor for this information.Ĭlick or the topic for details: What is CMOS?Ĭomplementary metal-oxide-semiconductor (CMOS) is a small amount of memory on a computer motherboard that stores the Basic Input/Output System (BIOS) settings. This guide only applies to systems with Intel® Desktop Boxed Processers. Intel disclaims any express or implied warranty relating to sale and/or use of Intel products, including liability or warranties relating to fitness for a particular purpose, merchantability, infringement of any patent copyright, or other intellectual property right. Except as provided in the Intel Terms and Conditions of sale for such products, Intel assumes no liability whatsoever.

Performing actions recommended by third-party vendors can result in improper operation, damage to the board or processor, or reduced product life. Intel may supply links to third-party sites, providing such links only constitutes suggestions and should not be mistaken as an endorsement or recommendation for any specific action. But this only makes sense if this step will revert flashed hardware.Use of unsupported motherboards can result in improper operation, damage to the desktop board or processor, or reduced product life. This Lenovo system comes with so much unnecessary software and I'm not sure what a 'system recovery' is really doing, so I think best is to clean install Windows 10. So here comes the question for the next try: Will a clean Windows installation revert bad BIOS flashes? Do the twenty seconds power button magicĪfter days I think either the second graphic card is broken, or something with all the driver/BIOS/flashing stuff went crazy.Insert the second graphic card ten times.Flashing the graphic card (not successful though).

Recover Windows 10 (this device has a button to boot a recovery install tool).Reinstalling some drivers, updated everything to manufacturer standard.The only thing I changed right before was enabling the SLI mode. Detaching the second graphic card solves this problem and the system is booting like always. After four years, it chose to not boot anymore overnight (fans go on, but display stays black no BIOS, no nothing, just black). This notebook came with two graphic cards.

Windows 10 factory reset from bios