If your explorer.exe file is not loading whenever you start your computer, this may signify file corruption, a system error or the presence of a virus. The problem is ...
Recently, this Compaq machine (WinXP Prof clean install, NTFS single partition) started getting explorer.exe AND iexplorer.exe errors. It's not mine (it's an in-law's) so I haven't seen it until ...
When I was researching your problem I Googled with the first line of your error:<BR><BR>"Explorer caused an invalid page fault in module EXPLORER.EXE at 017f:00401f31"<BR><BR>Got loadsa hits.