Remove the tin key overlay.

The overlay is attached with double- sided tape of some sort. A little care and patience will allow you to remove it only slightly warped, and it is fairly easy to straighten out later. I took a small jewelers screwdriver and started prying near the "ON" button, and worked upward toward the screen.

When you get near the screen, try to preserve the shape of the overlay because that portion is a bit more difficult to properly straighten later. Once the overlay is removed, put it in a container or somewhere away from dust. The double-sided tape should stay with the overlay (mine did, at least) and will gather dust and stuff making it less sticky if left out in the open. 48sx owners will need to remove the little hp logo insert above the screen as well.
I used a hair dryer to warm a little bit the glue. It's then easier to remove the overlay. But you must be very carrefull not to over heat the HP, especially the LCD display!! I placed a cardboard above the LCD and blew hot hair only in the opposite direction. You will not manage to heat all the overlay, but at least until the second or third row of keys it'll be easier! - SG

HP-original HP-original
Before After