Find back slash keyboard

/ is called a forward slash

When you were typing something you probably hit the left shift key along with ctrl. Hold down the left shift and ctrl for about 2-4 seconds and you should get your question mark back.

To make it so it never happens again, go to control panel / region and language / keyboards and languages / change keyboards. Remove every language except for English (us) or whatever region you want to use. Before you accept verify that your keyboard is on your preferred language before you do this. check and make sure you are getting the proper slash when you push slash, to change it if you're not getting the slash use the (left ctrl + left shift for 3-4 seconds) if that doesn't work then try alt and left shift.

Try now~ Then you can reset your keyboard if you like

They key is on your keyboard and you don't need to use the Fn key.
As an alternative run osk.exe (On_Sreen Keyboard)

On a Pleomax PS/2 keyboard it is right above the Shift key, next to the Enter key.

http://www.ebay.com/itm/NEW-IBM-LENOVO-Ideapad-G575-G575A-G575AC-G570-series-KEYBOARD-US-black-frame-/110931720756?pt=PCA_Mice_Trackballs&hash=item19d40bba34

A) Forward Slash: -> /
Combined with ? key. To the LEFT of the Shift key
(Above CTRL key on Right side)

Also in number pad area at Top.
To the Right of the Num lock key.
(Number pad area is right side of keyboard)

B) Back Slash: -> \
Combined with Colon key ( : )
To the LEFT of number 7/Home key, in number pad area on Right.

C) 1, 2, 3, 4, 5, 6, 7, 8, 9, 0; then Hash ( - ) key.
Combined with Underscore ( _ )

.....and slash out it's batten are not there...........

Believe Forward Slash is your slash out.
Explained where it is above.

For additional questions please post in a Comment.
Regards,
joecoolvette

You keyboard maybe lay'd out for another country. I saw this in Mexico once. ASCII are the characters. You type Alt-64 for @.

http://www.asciitable.com/

To type a slash going from the lower left to the upper right (like this / ), hit the key to the right of the full stop key on your keyboard. To type a slash going from the lower right to the upper left (like this \ ) hit the key to the left of the z key on your keyboard.

The kind of slashes used in web addresses are forward slashes, that is going from lower left to upper right e.g. http://www.fixya.com/

it should be beside the Z and shift key on the left side of the keyboard

The back Slash would be above the ENTER key and the @ sign can be accessed by holding SHIFT and pressing number "2"

In case you are not able to get the desired keys normally. It is possible that there may be something stuck between the keys. I would suggest you to kindly remove the keys and clean the base.