power issue

Hello all, this is my first time on the forums. I recently picked up an older 2013 Mac Pro for super cheap at a local surplus store and brought it home to find no CPU or memory. I got a 10 core processor for $85 on ebay (E5-2690 V2) and 32gb of memory. When I installed them and powered on the...

The HDD on my iMac failed couple weeks back and yesterday, I opened the screen and replaced the dead HDD with an SSD. Powered on the Mac and reinstalled Catalina using a bootable USB drive. Everything went well and macOS got installed. After first login, the system prompted me that there are...

Hello everyone, hate to be a bother, but my first post is one asking for help troubleshooting a peculiar issue I am currently having with a 2010 Mac Pro I picked up. Other than missing ram (which I have replaced with a random stick I had laying around, and some dust, it seems to be in complete...

I've read through many threads @MacRumors and I haven't found a solution for my specific problem yet. My system setup: Mac Pro 5,1 Mid-2010 Westmere Dual Quad Core 2.4 Samsung SSD 500GB (as startup/boot disk) 16 GB RAM 3x WD 4TB Disks Sapphire HD 7970 3GB -> It's brand new and for Mac Pro 4,1 /...

Looking for ideas on how to fix my iMac, it's a 5k 2014 that will no longer boot. It all started one morning when I'd put it to sleep the evening before, when trying to wake it, nothing happened, and the power button did nothing too. Randomly managed to get it to boot later that day, would...

Hallo Guys, - I already searched for a similar problem than mine in this forum, but didn't find anything helpful. - My MacBook Air 2015 is dead and I don't have a clue whats broken, maybe you guys can help me. Everything began with this issue: My MacBook Air (MBA) just turned off while I was...

i recently received a mac pro 3,1 however on trying to power it on all i can hear is the disk drive and hard drive spin up with no fan movement what so ever. There is a red light in the top left corner of the logic board and all the lights on the ram cards are red whether there is ram in them or...

Hello All, I believe my MacPro2,1 from 2007 has a dead PSU, but I'm trying to confirm this before I try to get a new (or used) replacement. When I try to power it on, fans come on, but the PWR_ON Diagnostic LED never comes on. However the "trickle" indicator does. It seems like the video card...

Hi crews, A friend of mine asked me to look into his dead MBP because the official Apple Dealers here in Germany refuse to repair it. It's said to be legacy. It had the well-known "swollen battery issue" that destroyed the trackpad. I replaced the swollen battery and carefully cleaned up the...

I am running a Mac Pro 1,1 that was firmware upgraded to 2,1 and runs the latest version of El Capitan (10.11.6) thanks to Piker Alpha's modified boot.efi. The computer has an ATI Radeon HD 5750 video card with a modified ROM that makes it appear in the OS as a 5770. Boot screen is showing...

I have a MBP 15" 2016 w/ Radeon Pro 460. After upgrading to 10.12.2, I found that my battery can barely holding up to 3 hours, just using Pages to edit some documents. This is way less then 6 hours that I can get before the 10.2.2 upgrade. By checking information in iStat Menus, I found that...

Hello everybody! Thanks for taking the time to help me with my issue. The strangest thing is happening with my Early 2011 iMac running Mavericks. The issue seems to have started when I switched to El Capitan. When I unplug anything from the back it completely restarts itself. It started...

Hi, Ok, so I'm using Apricorn's Velocity Solo x2 and want to add an addition ssd through it's sata port (reason for this is Apricorn says read/write speeds will go up to 800mbps with two ssd's working together; please read about it if you don't know of this product), but I can't find any place...

i am using iphone 6s - space gray -64g --ios 9.3.3 it was working good until 2days ago. when i pick my phone from the pocket for watching time, i press the power button but nothing happened. so i pressed home button either but nothing happend too. the screen was black and i thought it was...

Yesterday I replaced the battery on my MacBook Air 13" mid 2012 with a replacement from a reputable battery reseller, and performed a "calibration". Today I charged it up to 100% and used it during the day, up until 3.30 pm. At that time the battery level was at 38%. I simply left the computer...

So, I buy this used MBP 13 (medio 2010) with a bulging battery for next to nothing. With great force I open it up and have the bulging battery removed. Afterwards it boots all fine, albeit very slowly. It works like that for a couple of days until it completely stops working. Now, the light on...

Hi everyone, I have a early 2008 24" iMac that is shutting off when the inverter cable coming from the power supply to the LCD display is plugged in. The computer originally starts but turns off halfway through the chime and all of the diagnostic LEDs go off and stay off- indicating the power...

Hi, I have a iMac mid 2011 27" a few months ago it stopped booting up first time, I had to repeatedly reset the smc to get it running. Now it is dead and does not power on at all no chime no noise nothing, I have taken it apart and exposed the diagnostics LEDs and there are all unlit, so I...