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I got lucky and this only happened on a single multimedia key, which was wired by itself. due to shitty soldering a switch can easily rip copper off the PCB over a period of time, which could possibly manifest itself as a dead row/column of switches. Which reminds me: don't forget to inspect all tracks and solder pads for damage. At the end I got pissed off, bought a bagful of Gateron Browns and replaced everything, along with fixing all the shitty soldering from whatever lowball factory Zalman contracted to manufacture this KB. Shift key, one word after the other is selected If it is not a US keyboard. Second time it only helped with half of non-working switches(IPA may eat away not just at dirt, but also anti-corrosive layer on contacts and make it worse over time). See the list of values for the Running the command Double-click on the new. solution on a Logitech support forum Fortunately, swapping the buttons is. First time around I did this and it helped for about a month or two. keyboard driver and choose Update driver Another easy way to switch users. logitech k120 keyboard function keys, logitech k120 keyboard not working. Take off all keycaps, press the stem so you have some room for liquid flow, and just spray the $h1t out of these little f#$&ers one by one, following by rapidly pressing each switch 100 or so times. Logitech K120 Ergonomic Desktop USB Wired Keyboard the leading Logitech dealer. I decided to replace my husbands keyboard after I used it and discovered it was NOT typing accurately. I checked my keyboard on another computer. The standard keys are working properly, but multimedia keys are not working. The most basic thing you could do, is try cleaning contacts with IPA or contact cleaner. I have window XP service pack 3 install on my PC.
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