Vista/W2k8 x64 on Modern Hardware in Microsoft Windows Vista Posted July 13 On 6/5/2022 at 6:33 PM, Moline said: I have an 11th gen Intel Tiger Lake processor with Lenovo BIOS and UEFI only mode. I tried this patch with Windows 8.0 (6.2) and it Got rid of the A5 BSOD, but when I tried this with Windows 7, it didn't work unfortunately and the A5 BSOD remained. Any advice here? Hello all, I also have tried to edit acpi.sys properly. Then I got new issue: checksum is not OK during load. My setup: AMD Athlon AM4 950 processor, a320m-s2h motherboard, ssd patriot GPT table, uefi boot. Windows Vista sp2 x64 with acpi.sys 6.0.6002.24312 file. What to to next? How to adjust this checksum or make it work?