Help pls i change my windows vista in windows xp  pro sp3 last year and today when i start my computer is open a window and ask me : 25 digi key Certificate SOP ...

My windows today is xp pro sp3

I can enter  into my pc  all my dates is there ( pls anyone have a trial key for me :(( , all my credit card pass,acount number is in my pc :(( .Help me pls

I don't think there is a trial key. You can either call MS support or you can try to restart the machine and go to a C prompt and try to install again. You need that key to install and it should be with the install disc of XP pro sp3. Once you install YOU MUST ACTIVATE or this will keep happening.

If by some chance you don't have a full install disc, then you need to get one and get the physcial media not a download. XP is getting harder to find nowdays and many of the copies on ebay are suspect.