I recently purchased this Yoga 11e which stated on the listing just a cmos error upon boot, by time seller sold it to me, it had been a good few weeks and it had completely run low and I mean 0.3 low, so somehow the bios corrupted and upon turn om after replacing the cmos it was blank screen, so I tried pulling the bios and re-writing it back on after then buying a cha341 programmer thing, to even worse black screen with beeping, I then used the official bios provided by Lenovo posted by Badcaps and it was working partly, so I got display and then just 1 error, the 0381: CRC EFI error, and passworded...

Hi I found this amazing website looking for solutions to bios problems and theres a clear strong passion and knowledge base here to very complicated situations for novice users like myself, especially when it comes to more technical stuff than I am used to, but its nice to learn more and go out the comfort zone.