Keyboard: Lost Volume Controls and CD Eject after (****) RAM upgrade
G5 1.8 MHz tower, OSX 10.4.8: Upgraded RAM, chips kept producing errors, so replaced them with different brand. However, during the error/shutdown/reboot process the apple volume keys and CD eject buttons stopped responding. Replaced keyboard with working spare, rebuilt permissions, tried disconnect and reconnect, changed keyboard for Macally Icekeys and installed software, zapped PRAM, carbon-copy cloned OS to another G5 (1.6 MHz) on which the keyboard worked, and found the error recurred after the new OS was up and running. Recurrs in admin and user boots on both G5's. Therefore must be in OS. Didn't want to do reinstall of OS, so hoped I could find relevant code and review it. Only effects the volume up, down, mute and CD eject keys on apple pro and macally keyboard. Now how's that for bizarre?
Nothing in system prefs seems to permit modification of keyboard, Macally installation didn't fix it. Assume during reboots with faulty (unsuitable) RAM - which was DDR 400 3200U chips, 512Mb, 3.0n/s (not 2.5 - unobtainable here at present) the OS became corrupted. (Hence copying startup drive to other G5 reproduces the error.)
Interestingly software options such as commandE in iTunes and Toast6 work to eject. I think therefore it's a keyboard recognition problem, only for those four keys.
Nobody can say I don't try hard to cause (and resolve) problems.
My FINAL SOLUTION will be to reinstall the OS, and do all the upgrades again, but I thought I'd see if anyone else had any thoughts. Oh, I didn't reset the CUDA switch once I'd decided it was probably software related.
(Classics, SE's, LC's, PPC's) iMac's, eMac's, G3's, G4, G5's, G5 iMacs,Powerbook G3 Mac OS X (10.4.8) Reluctant PC user also (Don't ask)
Further: Finally used Cartbon Copy Cloner to copy boot drive to spare HDD, then reinstalled OSX, copied original files/preferences etc back, and keyboard works, fully functional.
Did have to do all the updates for OSX10.4 iof course. But still no anwer as to why?
A failure to recognise keyboard, corrupt system files.
No thoughts?
No easier solution?
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