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iMac issues.


UltraMega

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So a customer brought me a 2010 27 inch iMac that he said wasn't booting up to the OS. Turned on, just didn't boot. When he brought it to me and I turned it on, it booted up just fine. I rebooted it a couple of times and it worked every time. Given the age and the fact that it had apparently failed to boot at least a couple of times, I asked the customer if he wanted me to replace the hard drive since that is a likely cause and pretty cheap and easy to do, so I replaced the HDD with an SSD, reinstalled high Seirra 10.13 and everything worked normally. I gave it back to the customer and he has been using it for a few days at least without issues. 

 

Today he reached out to me and told me it's not booting again, and it never boots. It's not an intermittent issue, it fails to boot every time now. He removed all devices except the mouse and tried booting it that way, same issue. 

 

Kinda at a loss, I would expect most hardware issues to be intermittent if something was failing but this hasn't been very intermittent so far. I didn't see a lot of dust when I opened it, but there are a lot of areas you can't seen on the inside of an iMac without digging further. Could dust cause something like this? Bad ram? 

 

The customer replaced the ram on his own and he had some issues after that so he switched back to the original ram. He never had any issues before that. 

Edited by UltraMega

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So when you say doesn't boot, does it even power on? Or powers on but doesn't boot?

Edited by Sir Beregond

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3 minutes ago, Sir Beregond said:

So when you say doesn't boot, does it even power on? Or powers on but doesn't boot?

Yea; white screen, apple logo, then reboots. 

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Maybe try resetting PRAM/NVRAM?

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29 minutes ago, Sir Beregond said:

Maybe try resetting PRAM/NVRAM?

I'm not very familiar with the apple specific stuff like this. What does that do? 

 

Could this be a dying CMOS battery, or whatever the apple equivalent is? 

 

That's probably it... Freaking apple, of course it would be on the back of the motherboard and require basically 100% disassembly to replace a battery. 

Edited by UltraMega

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13 minutes ago, UltraMega said:

I'm not very familiar with the apple specific stuff like this. What does that do? 

 

Could this be a dying CMOS battery, or whatever the apple equivalent is? 

 

That's probably it... Freaking apple, of course it would be on the back of the motherboard and require basically 100% disassembly to replace a battery. 

I think its kinda like a CMOS reset. I just remember them doing that on my work MacBook Pro. But like you I am not really an Apple/Mac guy, so not that familiar.

 

That was going to be my other thought. And yeah...of course with Apple. :rolleyes:

 

 

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SSD/NVME: x2 Samsung 970 Evo Plus 2TB
SSD/NVME 2: Crucial MX500 1TB
PSU: Corsair RM1000x
MONITOR: LG 42" C4 OLED
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CPU: E8400, i5-650, i7-870, i7-960, i5-2400, i7-4790k, i9-10900k, i3-13100, i9-13900ks
GPU: many
RAM: Corsair 32GB DDR3-2400 | Oloy Blade 16GB DDR4-3600 | Crucial 16GB DDR5-5600
MOTHERBOARD: ASUS P7P55 WS SC | ASUS Z97 Deluxe | EVGA Z490 Dark | EVGA Z790 Dark Kingpin
SSD/NVME: Samsung 870 Evo 1TB | Inland 1TB Gen 4
PSU: BeQuiet Straight Power 12 1500W
CASE: Cooler Master MasterFrame 700 - bench mode
OPERATING SYSTEM: Windows 10 LTSC
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CPU: M1 Pro
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