What is sdexe.exe?

Try removing it from safe mode. You probably can not delete it if it is being loaded with Windows as your operating system considers it a file that is in use, so check startup items for it as well.

 

In most cases of this Casino Palazzo problem it has overwritten your real Windows Media player file.
This file is wmplayer.exe. They overwrite it with their program keeping the same filename. Sneaky bastards. They also quite often drop a file with name of "SEX" or something like that in c:\windows\system32 and sometimes even on the Desktop.

So you will need to look around for your wmplayer.exe files. You may have a few depending on how you installed your system. The one the came with Win XP is about 508 k. It is version 8.0.0.4487 (yours may be slightly different). Then there is the version from when and if you upgraded to version 9 of Win Media Player. Version 9.0.0.2980 is about 72k. Most likely this is in c:\Program Files\Windows Media Player (but it will be where ever you installed it).

If they did overwrite the real one you should be able to tell by getting Properties info on the file by right clicking on it and selecting Properties. That take a look at a version tab and see who it belongs too. The real wmplayer.exe will have a version tab and obviously belongs to MS. But the fake one may not even have a version tab.

You can re-install Windows Media Player from:
http://www.microsoft.com/windows/windowsmedia/9series/player.aspx

You know you really should follow the instructions here: http://forums.majorgeeks.com/showthread.php?t=35407
because system restore should be disabled before doing this. And then re-enable after getting the problem fixed. Also there are other good things to do in that thread that could uncover other issues. And your Ad-ware is old. They have Ad-aware SE now.