Hey Dietmar, hi. We on MSFN topic trying to help our moderator Dave-H install XP on Lenovo Ideapad Flex 10.
When Dave try to install XP Integral Edition he get BSOD. We know you have huge experience with that laptop.
Can you, please, help Dave, cause specific Lenovo acpi.sys can not be downloaded anymore. And we don't know maybe it need special modified BIOS or else.
Here is topic on msfn: https://msfn.org/board/topic/183198-ahci-and-acpi-for-xp-on-lenovo-netbook/
We are already called you for help there on 6 page.