ctrl+alt+Esc is the keybd comb. for Start button.
I gotta wonder: how did you look at help?
Are you familiar with Safe Mode?
You can also try step by step confirmation to see where it is hanging and post back.
Cold boot and tap the f8 key during the black screen boot. eventually you'll get the Startup menu and you can pick Safe mode and other tshotting modes from it.
to me it sounds like you are hung. i wonder if you have any hd activity.
it could be anything on inherited laptop so i would start with most likely which imho is spyware/virus, bad or missing driver, bad hardware, software conflict.
I would start it in Safe Mode and see if I can see my taskbar then. If yes, I would check Device Manager for Yellow.
if no yellow i'd use Start/run/msconfig and post what was automatically starting up.