Clean Boot Mode - How safe?

[NeilF]

Crytek have sent me an email asking me to boot up in "Clean Boot Mode" - http://support.microsoft.com/kb/929135 - to try and diagnose why Warface won't start properly on my Vista PC.

Anyone aware of how safe/reliable it to do this? ie: I don't want to risk borking my machine/config etc.

 

[NeilF]

I'm not going to risk it... Just wary of booting up afterwards only to find a whole raft of issues with core "non-microsoft" drivers/services that were not running for the previous boot up.

If they can't fix their game without me having to go to such lengths, oh well!