Original Title: sign in

I see there are several "sign in" problems. I cannot ee mine there.
I have had no trouble till  recently when I had to change password and reinstall SkyDrive App.
What happens now is that when I type my sign in details, I immediately get amessage saying "There is a problem signing in".
I can still access the web based folders (same email and password) but not the app. Therefore will not sync.
Problem is therefore not on the computer but in syncing between computer and web.
HELP

(Same problem exists on my other brand new computer).

Both Windows 8, both i5 processors. Have uninstalled and reinstalled Skydrive many times.