I have been having some problems with my keyboard on my Dell G5 5587 laptop. A column of keys have stopped working: 2,w,s,x. Recently I replaced the thermal paste on the CPU and GPU (nightmare). In the process I had to unplug all the ribbon cables and then plug them back in later. I have since used canned air to clean the ribbon cable and the connector and I have re-seated the cable at least three times to to no avail. However the keys aren't completely dead. I have noticed that sometimes If I hold down one of the non-functional keys and press the key to the right of it (for example hold down s and press d) it will work. Also if I do this enough and tap the non-functional keys enough they can temporarily start working again, however they sometimes stop working again and they always seem to stop working after I restart or go into and back out of sleep mode. I have also tried reinstalling drivers twice and it doesn't do anything. A new keyboard isn't that much but replacing it is a huge pain in the *** for this laptop. Because of me working on the laptop recently and since it is a whole column, part of me thinks it is a hardware problem, but since it didn't happen for a few weeks afterwards and came on slowly and because of them working sometimes part of me thinks it is a software problem. Anyone else had this problem before? Any advise? Also how much would it cost to send it to dell to be fixed of of warranty?