Help!! I have a Compaq Presario 2100 that is about six or seven years OLD. I am having problems with keys sticking. Right now it is the home KEY. Before that it was the "c" key. The keyboard has been taken apart and the connections examined. The home key has been taken off and cleaned. So far there is nothing obvious. I am anxious to solve the problem since it can be pretty difficult typing or doing much of anything when the home key periodically sticks.how far down did you disassemble the keyboard? did you simply pop off and clean the buttons or did you actually clean the contacts on the PCB (Printed Circuit Board)?I popped off and cleaned the buttons and re-seated the contacts on the PCB, but I did not clean the contacts. Thanksthat should do it then. please inform us if the problem still persists.I bet that at some point this keyboard has had a coffee encounter...

If you can lift the membrane, then a quick WIPE with an alcohol-based cleaner is your best bet.  But for all the effort involved, YUO could always replace the keyboard...I get a new ONE every year...PS2 of course.