What dose it mear upper case letter on computer?

The Characters must have any caps, all lower case.

It may be that your Caps Lock is set to on.

Passwords are case sensitive.
For example, if your password is: november684,
then the system will not accept November684, or NOVEMBER684, or noVember684 etc...
The password has to be exact.

If a letter in your password is Upper Case, then that letter has to be typed in as Upper Case, and if a letter is Lower Case, then it has to be typed in as Lower Case.

I'm not trying to be childish when I say:
Upper Case means: A, B, C, D etc...
Lower Case means: a, b, c, d etc...

Shift for one letter, Caps lock for all caps. Lower right and left of keyboard on most computers.

On I phone, there is an arrow on the lower left - tap once, it will turn dark, and will cap one letter. Double tap, and it will use all caps, until you release by tapping again.

Hi,
Upper case (letter) like A and lower case (letter) like a or you can say big letters (ABCDEF) and small letters (abcde)

Its CAP as written for example: a = is lower case and A= is upper case.

Upper-case letters are the letters A-Z (also called capital or big letters). Lowercase letters are the letters a-z (also called small letters).

Upper case letters are capital letters, for example, CAPITAL, the C is upper case, the A is upper case, the P is upper case, the I is upper case, the T is upper case, the A is upper case, the A is upper case, lower case letters are what you are reading right now, for example: this sentence is in lower case. Hope that helps.

Upper case letters are in capital letters and lower case letters
Eg. Upper case letters are A B C D etc.
Lower case letters are a b c d etc.

Please remove the usb cable and try to connect do you see the notification new hardware found if yes just check my computer dose the hard drive shows over there if yes and double click on it dose it open if yes and the hard drive is empty .
then go back right click on the hard drive check properties dose it show the empty and the full graphs if it shows full and dosnt show the drive letter.
then right click on the my computer icon on the desktop go to manage and diskmanage ment check the hard drive over ther dose it show its unformated or un initialized if no dose it have drive letter on it if no then right click on the drive and say change drive letter and assigned one letter like h or g and check in my computer now dose it appair.if still so try changing the usb cable may its defective.
if dosent detect at all could be your hard drive case so you can remove the hard drive from inside the case and connect it directly.in the computer if works backup your data abd return backthe hard drive in the case and if its still in gurentee return it to the service center.