I currently run a 2010 21.5'“ iMac which is my main workstation. it’s on it’s 2nd HD, which is an SSD, replaced in 2014...

I’ve replaced my 2007 15” MacBkPro w 3 hard drives, 1 screen, maxed out the memory to 4 G, replaced the power cord, DVD...

My MyBook 3T Drive, less than 1 yr old, only used for Time Machine backups, refuses to power up now. Have no idea why; I...

Not long ago I replaced the LED driver board. while doing so, the display cable was difficult to disconnect and...

I posted a few weeks ago about my screen flickering - was told it was the LED Display Driver Board that needed replacing -...

My screen is sometimes dimming ever so slightly. I recently had to buy yet another charger - this one I bought from Apple...

am in Snow Leopard routine maintenance couldn't verify disk, went to DU to repair; told to reinstall OS. ran fsck -fy on...

*update* Talked to WD on the phone to verify they would replace the drive but not remove the data or send the old drive back. I said I didn't care about the warranty, just the data, so he said just to remove the drive and buy a SATA cable to reconnect and obtain the data that way. WD also said take the bare-bones drive in and show to a tek to buy the propert SATA. I went to MicroCenter and the clerk in the Build Your Own dept showed me a case with a power cable and a new power board that would just plug into my hard drive (once I removed my power board) and that should do me. $19.99. I just now finished - took all of 10 mins or less. Was a snap. Just ran a diagnostic on the hard drive as yeah, I was concerned. Everything is fine. Apparently the power board (I don't know what the tek term is but it's the board where the power cord would connect) was bad in the old one. Very happy camper now !!

finally got around to replacing the panel screen display today. I had also purchased another data cable just in case - but then when I got to the point where the LED driver board was to be disconnected - I compared it to the original and saw that they were different!! I was going to put my original back in there, thinking maybe this is why the display would not turn off unless the battery was removed and the power cord disconnected - but I never imagined the wrong LED driver board had been sent to me. I did not compare them the first time around, when I replaced it (after someone here on iFixit saying the problems with my screen were caused by a faulty LED board, not the screen itself.) SO - original LED driver board put back in. Since I had asked so many people and the entire Internet why my display would not turn off, and no one had seen this before - I correctly surmised that replacing the LED board with the original one would take care of that problem, so I did not replace the data cable. I did replace...

MY ANSWER: Resetting the NVRAM disconnected my bluetooth mouse and keyboard hence I had no responses from any key combos when trying to reboot. Reconnecting with USB keyboard and a USB mouse resolved this issue - the install disc was already in the drive. I went into Disk Utility, wiped the drive and am now doing a clean re-install. Cheers!!! Thanks iFixIt!!!