![]() ![]() ![]() Here is an article addressing that issue.įix CMOS Checksum Error on Windows 10, 8.1, 8, 7, Vista, XP Sep. Since it’s dated 2007, you might want to research the manufacturer backdoor password for your unit. Here is an article that includes manufacturer backdoor passwords. This topic is in no way OS dependent, as BIOS or UEFI are firmware and come into play long before the OS even begins to load. Lastly, has anyone paid a commercial computer place or a person to do this so I would have an idea of cost.Įdited by britechguy, 30 November 2018 - 01:13 PM. ![]() I just purchased this laptop on Ebay & can return it or get partial credit if I was able to unlocking and get access to the Bios. I assume that using debug info from command prompt inside windows 10 ( info from a prior post ) would also generate a CMOS checksum error & would not work. ![]() I do not feel comfortable opening & taking the laptop apart, especially since I can't turn the internal battery off. It generated a CMOS checksum error but the bios was still locked. I tried CMOS-De-Animator which is software to unlock Bios via resetting Bios back to default state. The computer boots normally to windows 10 w/o any problems. I tried to see if I could boot the computer use a flash drive with Rufus, but it just booted straight to Windows. This model also has an internal battery as well as the traditional battery which you could turnoff if you had access to the Bios. I have a LenovoT440s laptop that has a locked Bios since there is a password I do not know. ![]()
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