OK, i've installed 3.11 OEM (not For Workgroups) and it's running ok. Thanks for help. 😀

Funny thing is that i found your thread (that you've linked) trough google and that's why i decided to join this forum. :) https://jeffpar.github.io/kbarchive/kb/068/Q68725/ <- seems like it might be mirror of that page you mentioned. I turned off VirtualHDIrq in system.ini but it didn't helped in …

Sorry, i've forgot to add that info in first post- both parts of installation (DOS bluescreen and GUI) are completing without issues, and yes, it's Windows for Workgroups. Win /n did nothing, but /d:t seems to work, so that would point into VxD issue - could You please give me more hints, what to …

Hello, I have Compaq Contura 420C, it had bad HDD that i've replaced and installed MSDOS 6.22 and Windows 3.11 in top of that. Issue is that it's freezing just after the boot - no reaction to trackball or keyboard. Setup itself is running correctly, no issues during installation but it won't run. …