How do I fix spacebar that is not registering/responding on my keyboard

Make your day easier-order a $30 replacement from Staples.

If on a Desktop, it's best to buy a new keyboard. On a laptop, where the kb is fastened to the case, try blowing out from under the spacebar with compressed air. That kb can be replaced too, but it's a hassle.

The reason for this happening is that the metal bar under your spacebar is not properly attached. It's time consuming to properly fix it, but it's an easy fix at that.

All you need to do is remove your spacebar and metal bar (shaped somewhat like a tall C, if held sideways). On the bottom of the spacebar will be approximately 2-3 small clips in which the metal bar will snap into. Once snapped into place, you will want to look at the area where the spacebar goes. There should be two small clips at each end. With the metal bar clipped into the spacebar, you want to place the "ends" of the metal bar under the clips on the keyboard and very carefully place the spacebar into the hole on the keyboard and snap it into place. Now test it out and it should work fine. If not, it's likely that the metal bar came out from under the keyboard clips. The annoying part is snapping the spacebar into place without having the metal piece come out from under those clips, so you may need to perform this task a few times.

Here's an example image...

If your space bar isn't responding when you press it, or if it responds sluggishly, it's possible that you have inadvertently enabled the "Sticky Keys" or "Filter Keys" accessibility option in Windows.

When these options are enabled, your keyboard response time will be dramatically slowed and may require more than one tap to register a keystroke.

Fortunately, it's easy to disable these functions and return your keyboard to normal working order.

Click "Start" and select "All Programs."

Click "Accessories" and select "Ease of Access."

Click "Ease of Access Center."

Click "Make Keyboard Easier to Use."

Click "Set Up Sticky Keys." Deselect the checkbox that says "Turn on Sticky Keys When Shift is Pressed Five Times." Make sure the box that says "Turn on Sticky Keys" is not checked. Click "OK" to save your changes.

Click "Set Up Filter Keys." Uncheck the box that says "Turn on Filter Keys."

Click on the checkbox next to "Turn On Filter Keys When Right Shift Is Pressed For 8 Seconds" to deselect it. Click "OK" to save your changes.

Click "OK" again to save all of the keyboard accessibility changes you have made.

Hope this helps

Of all the keys on the keyboard, replacing the SPACEBAR is probably the most difficult. The SPACEBAR is kept even by a metal wire that is inserted into slots on each leg of the plastic bar key. However, you have to get the wire into the slots without depressing the wire. If you push the wire down, you compress the wire and installation becomes impossible. As a general rule, do not remove the SPACEBAR unless absolutely necessary. If you remove the SPACEBAR, remove several surrounding key caps also. This will let you get some tools under the SPACEBAR wire later on. Once the SPACEBAR is reinserted, you can easily replace any of the other key caps.

some of the fluid from the wipes must have short circuited the keyboard! you may have to invest in a new keyboard and keep it away from water based wipes this time!

Buy a new one.not worth fixing.RICHARDM69

Since the spacebar is the most used key on the keyboard, it is likely a hardware failure of the spacebar itself. Replacement keyboards can be found on EBay and normally run about $20

i) try connecting another keyboard( if you have any spare) if it working ok .... then there is problem with ur keyboard(>3 years) 

just take it it up the spacebar key with a pen or anything like a pen and clean inside of the keyboard which is the spacebar is placed and fix the spacebar again and type