the following test cases are useful for u , but it is related to bank application so u can modify it as ur way

a) Enter the URL check the login page open or not
b) Default focus should be on user name
c) Pass word should be encrypt ional format or not
d) Pass word should not get copy or not (that is
ctrl+c, mouse right click, edit have copy disable not work)
e) Input domain testing on user name (that is boundary
value analysis)
f) Input domain testing on pass word (that is boundary
value analysis)
g) Properties check on buttons (that is able or
disable or not)
h) Functionality check on the buttons (it work correct
or not)
i) Authorization testing (that is valid or invalid
values are allow or not)
j) Ceysincitive check on the login page (that is allow
the cap or small letters)
k) After the sing out login come back to your previous
page login is must and should expired text.
l) Enter into the after login page copy the URL and
click after on the logout past the URL then open should not
allow.
m) Check the assignation time with respect to client
n) Check the cockers
o) Check the single user or multi-user are use
p) Check the usability of the login page
q) Under usability look and fell, spieling mistakes,
colures, font sieges and so