Hi, First of all, I did search the forums and the net for any of this but came up blank... I have a mysterious problem when trying to boot from my slipstreamed WinXP + SP2 cd: It asks whether to boot (as normal). If I press any key (after which the blue screen should appear and setup should start to load various disk drivers), the screen flashes, as if changing resolution or mode, so _something_ is probably started. There is no CD or HD activity. I tried this with both my drives (DVD & CDRW), same result. The CD is just a Dutch XP cd with SP2 and a custom winnt.sif and uxtheme... I've had errors in my winnt.sif the last time I made a custom CD (for SP1), but then an error message appeared on the screen saying something was wrong... now just blackness... The CD is burned as documented on http://www.theeldergeek.com/ ... I thought maybe that wasn't working or correct anymore for SP2, so I used the method on this site (with MS' iso creation utility), and that had exactly the same result. I don't know what could be causing this... I can browse all CD's I created perfectly under Windows... Anyone any ideas? TIA