Trackpad not working and erratic keyboard behavior
crwdns2934249:0crwdne2934249:0:
My laptop suddenly started to experience problems with the trackpad and keyboard for no apparent reason. At first the trackpad responded poorly and after just a few minutes it practically stopped working at all. Now the cursor cannot be moved and clicking by tapping does not do anything. However, clicking seems to work sometimes when actually pressing the touchpad, which gives the "click" sound. Additionally, sometimes the trackpad is not found at all in system preferences.
The keyboard problems started at the same time. The keyboard often doesn't momentarily (for 1-2 seconds) register keypresses and sometimes the keypresses get repeated numerous times although I only press them once . This seems to affect all the keys, not just a certain part of the keyboard.
I've tried resetting SMC, NVRAM, deleting preference files and reinstalling OSX but they did not help. I also opened the laptop and checked that the trackpad/keyboard power connectors had not become loose. I also inspected the batteries and they did not seems to be bulged. Any ideas where to continue troubleshooting?