Hi guys, I'm desperate with a problem in my laptop. It comes with W.Vista, but I wanted to change to W.XP (does it make any sense 2 you all? hehe) The fact is that with W.Xp I'm having random BSOD's, and, after a few work with Google and searching tech forums (including yours), I have been able to find some related problems / answers / solutions, but none of them works for my system. I've tried to: 1.- Re-install Windows. 2.- Disable network cards, video cards, etc, in order to isolate the problem, but with no results. 3.- Notice the situations when it fails, trying to figure out what's the problem about. But it seems to be no linked to any single situation. 4.- Set the dump in Windows and download and use the Windows debuger. Then I think I've found something related to a driver corruption, or something like this (see attached dump) 5.- Run the windows device verifier. It fails with wmiacpi.sys (see details in attachment), but don't know if this is the main problem or not. However, I have disabled in the registry all entries with EnableACPI to OFF just in case (don't know if this is good or not). BSOD is still there... 6.- Take a look at the event viewer, but can't figure out anything (maybe I'm not techy enough) If there is some driver problem, I have one more problem: ACER & Microsoft doesn't allow in Spain for the Acer laptops users to install Windows XP, so they have retired all XP drivers... So I found them in a LatinAmerican "not to much updated" ACER web site. So it is very probbably that my problem is related to some old driver... In such case, I would need to know what exact driver is the problem about to be able to search for any good version or something like this... Or, at least, to disable such driver (in case it is possible). Could some caritative soul help me with this, please? Many Thanks in advance. P.S: If you need more deep information, please ask for it. Please, sorry if you find some info in Spanish and feel free to ask me to translate it to you.