This is a software problem. Touch typing causes odd effects like cursor jumping back at random, weird programs starting up, and other badnesses. Impossible for typing. There are two bugs causing this behavior that are correctable. First bug is that the touch pad is active, so that stray finger touches turn into mouse clicks, which make a lot of bad things happen.
Touch pad fix. Do the Touchie-Swipie thing on the right hand screen edge and touch the gearwheel charm for "Settings" Touch or click on "Personalizations". Click on "Ease of Access" (text string in lower left hand corner. Click on "Make the Mouse Easier to use." Click on Mouse Settings (text string toward the bottom. When the Mouse Properties box opens, select the "Touchpad" tab. Uncheck all the boxes. Then check "Disable internal pointing device when external mouse is present". Write all this down somewhere, you will probably need to repeat this because Windows sometimes messes this setting up. This one fix will cut down, but not eliminate the flakie-wakies.
Sticky Key turn off. I think this is an HP Bios bug. HP makes some keys "sticky". Not sure what sticky is supposed to do, but it is bad for typing. Press the left hand shift key FIVE times. This will bring up a little window that allows you to turn off sticky keys.
Once BOTH patches were applied the keyboard works well enough for touch typing.
Wasn't that easy?