http://forums.steampowered.com/forums/showthread.php?p=20917693
1. Right click steam icon in tray, click settings, go to tab "Download+Cloud" and ENABLE the option "Enable Steam Cloud Synchronisation for games which support it"
2. open steam, go to library, right click TF2, properties, tab updates, UNTICK the option "Enable Steam Cloud Synchronisation for Team Fortress 2". Then go to the first tab, and click "set launch options" and clear ANY thats there.
3. Right click steam icon in tray, click settings, go to tab "Download+Cloud" and DISABLE the option "Enable Steam Cloud Synchronisation for games which support it"
4. Start TF2, Options, Multiplayer, UNTICK the option "synchronize with the steam cloud" near end. Close TF2.
5. Close Steam (as in, click in the tray and choose EXIT)
6. press winkey + R (winkey = between CTRL and ALT lower left of keyboard) and type in: "regedt32" without the "" and press OK. Browse to:
HKEY_CURRENT_USER\Software\Valve\Source\Tf\ and delete the "settings" subfolder.
7. Go to ..\steam\steamapps\*your account name here*\Team fortress 2\"
delete ALL but the "tf" folder.
8. Go to ..\steam\steamapps\*your account name here*\Team fortress 2\tf\"
delete ALL but the "maps" folder.
9. Go to ..\steam\steamapps\*your account name here*\Team fortress 2\tf\maps"
delete ALL subfolders but not the files within the "maps" folder.
that concludes a reset to all
Steamcloud needs to be turned OFF, cos there is NO way to delete what is up there, you get it downloaded everytime you start TF2, if you want it or not, if you changed it or not etc. the only thing they do is up the config of your when you close the game. And of that, I'm not even sure, cos I've seen things come back that I had set in a autoexec.cfg differently EVERYTIME I launched the game. No idea why it is default on. Sure would not want that.
you may:
- lose favorite servers
- any mod, downloaded stuff like skins, mods etc. They will redownload when you visit the server.
the only settings it is NOT resetting is the "rate" value in the game, cos that one is for some strange reason located in HKEY_CURRENT_USER\Software\Valve\Steam\ key "rate" value... depends on what you had set it. Default is 10.000.
"steamcloud" is saving locally the settings in: ..\steam\userdata\"xxxxxxxx"\...