thx in advance.. Much to my surprise, it reported that it had successfully saved the new information. The battery itself should be good on a new motherboard but you might want to put a DC voltmeter to it. ), which is only supposed to be available to repair facilities. And, perhaps even more astonishing was the fact that, when I rebooted, the double-beep and warning about invalid machine type and serial number had disappeared. Similar to what I stated above, I am afraid to try that lest I ruin my computer, and I doubt it would do any good. Option 2: In the Command Window, as shown below, type the following command, msinfo32. However, when I make a selection to change the numbers, it says that the "EEPROM is currently set to read-only", and that I should reboot and hit "Esc" when the ThinkPad logo appears. Does anybody know how to set the new Machine Type and Serial Number after a motherboard replacement for an H535? Lenovo is telling me I need to find an Authorized Provider, but none of the ones on their list are in business or offering Lenovo support any more. Unless lenovo does things really different, the bios doesn't know what case the motherboard is installed in. Maybe the motherboard you received wasn't completely programmed by lenovo before being shipped. I can boot from it and bring up the utility. The following command line shows how to update the machine type and model number to 1234567: and liability for the content of Computing.Net and its accuracy. I had a simular issue with an IBM ThinkPad a few years ago and within the bios there was an update function. I have now installed the motherboard, and it is working. The following command line shows how to update the machine type and model number to 1234567: Replaced Lenovo Motherboard- now Serial # and Model are Invalid in the BIOS is commonly caused by incorrectly configured system settings or irregular entries in the Windows registry. As I now understand things from a ThinkPad Hardware Maintenance Manual, I may actually need to enter the numbers from my old motherboard. Such Use this information at your own risk, though, as messing with BIOS apparently can lead to problems that are not easily fixed. “String” is the target MTM, SN and System Brand ID. It's usually best to use the jumper to clear the cmos. Solved Replaced Lenovo motherboard-BIOS invalid serial number. That said, the changing of these text strings seems relatively safe. I have read various things on the Internet about what to do, such as:- Update the BIOS with a CD-bootable version of the flash utility (I can't find any BIOS entry under the Lenovo support downloads section for the H535, let alone a CD-bootable version)- Use WinPhlash to modify the DMI entries of the BIOS (I apparently need some sort of BIOS ROM file to make this work, though, which I do not have)- Use a Lenovo utility (such as "Hardware Maintenance Disk") for my model (Apparently, these are only available to Authorized Providers, and nobody in my area does this)- Clear CMOS by disconnecting power and CMOS battery or using some sort of jumper on the board (That seems unlikely to work, so I am avoiding doing that). It doesn't seem like that would do anything, but it may be worth a try. Well, my BIOS is by American Megatrends, and I discovered that they have a set of utilities that includes one called AMIDEDOS. Again, I am a bit astonished at how simple it was to actually fix the problem once I had the correct piece of software, which neither Lenovo nor American Megatrends apparently provides to owners, and it took hours and hours of research and searching to figure it out. The numbers are shown in the BIOS (the Machine Type and Serial Number show "INVALID", but other numbers are there). In addition, the BIOS showed the new values I had entered, and the "Manufacturing Boot Sequence" option (which I understand can be much slower than a normal boot) had disappeared. The information on Computing.Net is the opinions of its users. So, I am in an impossible situation. I was able to obtain a Hardware Maintenance Diskette image for the Think branded Lenovo's (IBM's? It is not intended for consumer use, but it is out there, and I was able to get it. When I ran the AMIDEDOS "DMIEdit.exe" program (right-clicked and ran as administrator right from Windows 10) and clicked on "System Information" in the list, I saw "Product Name | STRING | INVALID" and "Serial Number | STRING | INVALID". splinke August 13, 2015 at 11:17:06 Specs: Windows 10. Does anybody know how to set the new Machine Type and Serial Number after a motherboard replacement for an H535? Even if no updates are available because it's a new model there's usually a download for the original bios. This error can be fixed with special software that repairs the registry and tunes up system settings to restore stability Thanks for your reply. To flash system brand ID: amideefix64.efi /sv “String”. To flash system brand ID: amideefix64.efi /sv “String”. Otherwise, select an item to start building your Cart. Option 1: In the Command Window, as shown below, type the following command wmic csproduct get name. I presume that, if I had a ThinkPad, that would make the EEPROM writeable, and I could fix the numbers. There is one for the H520, which may be the same, but I can't be sure. The Serial Number on my old motherboard is different than than the one on my computer. Since the machine type and serial number is just a sticker on that case I'm wondering how the bios knows the difference.
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