IM HAVING PROBLEMS IN MY BACKSPACE, SPACE BAR AND ENTER KEY KEEP STOP WORKING, IVE LIFETED OFF A FEW BACKGROUND PROCESSES BUT ITS STILL DOING IT...WORKS FOR SO LONG THEN STICKS, THEN STARTS AGAIN. REALY ANNOYING

clean both the carbon contact this will solve your problem.

Try to update its driver...

might be dirty, get a can of air, from like home depot, office max, etc. turn off laptop, take out battery, turn upside down and blow the air underneath the spacebar, this should fix your problem. If not you need a new space bar.

Chad

Try Alt+Right Arrow to go back to former page and put cursor where you were typing , left click ( mouse )
and now you can use backspace button , you must click all the time the left buttom before using the backspace if not you will have this problem again.

hope this helps

have you rebooted? boot into bios and see if you can backspace or normal space there, if nothing works i'd just replace the keyboard

If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97

You move the carrier, with the space bar or backspace key, to where you want the margin to be set.
If the carrier stops before you get to where you want to set the margin, then locate the ALT key at the bottom left on the keyboard, hold it down, then locate the key directly under the words above the keyboard that say M REL (the 3 key) and push it. Then move the carrier with the space bar or backspace key. (whichever direction you want to go)
When the carrier is where you want the margin set, hold down the ALT key and push the key under where it says L MAR (4) to set the left margin, or R MAR (5) to set the right margin.
The ALT key works with all the functions listed above the keyboard.
The CODE key works with the functions/charachters printed on the keys themselves.

1234567890-=backspace
tab qwertyuiop
caps lock asdfghjkl;'enter
shift zxcvbnm,./ shift
ctrl fn alt space bar alt ctrl
besides # and letters most keyboards r a bit different...hope this helps.

Try buying a can of compressed air and cleaning around those areas if you have spilled liquid on them ,that could be the prob as well

Im afraid to suggest this but if his/her hands were wet which I suspect might be it the keyboard might be killed by the water but only selective keys are working.

Since this is a Compaq do you have HP's ADP plan for it?
If you do they will fix that for free. Mind you it will take 2 weeks.

And I know this is more of a comment than a solution but is probably what happened.

time for new kb same thing happend on one i worked on go on ebay 16 20 bucks easy to replace opo up top cover covering the screen hinges that plastic then under that 3 4 screws hold kb down with ribben cable pop it up out its litt rackets the rippon cable then pull up leave up with new one installed then push down