Thank you for the clarifications. Due to the Chinese virus, the Windows 7 free upgrade to Windows 10 still valid!
[QUOTE = "hamdoullah, post: 1579040, member: 1309457"] Không có win10 không sử dụng Slice cũng như win8.1, họ sử dụng bảng MSDM thay thế. Bảng Slic được sử dụng để kích hoạt vista và win7 cũng như các phiên bản máy chủ windows. [/ QUOTE] Tôi đã hiểu vấn đề. cảm ơn bạn
@roqquas "... apparently computers shipped with Windows 8.1 & 10 would have a SLIC V2.1 by default ..." This is not always true, However, in your case, you do have two valid SLIC 2.1 tables. IIRC, the original OA 2.0 whitepaper suggested not to include more than 1 SLIC in the ACPI namespace to avoid issues, but I also spotted such cases. Nonetheless, it would be better if you install the Alienware OA certificate manually and re-check the activation status. I guess Windows is preferring the Alienware SLIC over the Dell one due to the alphabetic sorting.
Both tables (OA2&OA3) are in very rare cases present or can be activated/changed, if the manufacturer offers a downgrade-option for operating system. For some customers which need an older system for compatibility. No actual hardware will have this, because most/all companys dropped legacy-support, installation of windows 7 is not possible.
The command /ato is useless in case of SLIC-activation, also phone-activation not needed: SLIC is complete offline and no need for contacting MS-servers. After installation of key and certificate it should be activated. Follow @Titos advice and install the Alienware certificate. Key needs to be any OEM-SLP-type, which matches to the Windows-edition.
@roqquas Looks like the table IDs are garbled, which is why Windows is ignoring the SLIC table altogether. Are you sure that there is no loader installed? Is it from a fresh Windows instance?
A small update: After going through a ton of lists I hit a MAK key that successfully activated it (despite The Ultimate PID Checker saying it's MAK count was -1). Still not sure why the BIOS was scrambled in the first place, but I guess that's just something to think over. Thanks for all the assistance up to this point!