frozen compaq laptop

Can anyone help me with a Compaq Armada 7800 that is frozen on the welcome screen? I turn it on and it shows the XP Professional Logo, etc then freezes on the welcome screen and keys or mouse don't work. Also, I have booted it into where it lets you pick safe mode, etc. I pick safe mode, previously working configuration, and start windows normally. Normally and previously working config. just takes me to the welcome screen, but safe mode goes thru a scrolling screen of text and then freezes. Can't get into setup to check that....any advise?