TheFreeWindows Keyboard Checkup is a free service that will let you check the keys of your keyboard and make sure they function as expected. Whenever you press a key that is not damaged, the relevant virtual button flashes and acquires a border. Note that the script cannot recognize which one of the duplicate keys (Shift, Ctrl, Alt or Enter) is pressed, therefore you need to try both of them to make sure they work.
Esc
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
| Prnt
Scrn Scroll
Lock Pause
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1
2
3
4
5
6
7
8
9
0
-
+
Bckspce
Tab
Q
W
E
R
T
Y
U
I
O
P
{
}
\
Caps
A
S
D
F
G
H
J
K
L
;
'
Enter
Shift
Z
X
C
V
B
N
M
,
.
/
Shift
Ctrl
Win
Alt
Com
Spacebar
Com
Alt
Win
Sel
Ctrl
| Insert
Home
PgUp
Delete
End
PgDwn
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