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BD PRO Going on and off without overheating

What should I do with the mac

  • Take it apart and pray that everything goes well (no technical experience)

    Votes: 2 100.0%
  • sell it

    Votes: 0 0.0%
  • throw it on the ground

    Votes: 0 0.0%
  • burn it

    Votes: 0 0.0%
  • Il take it

    Votes: 0 0.0%
  • live with it

    Votes: 0 0.0%

  • Total voters
  • Poll closed .


New Member
Sep 23, 2020
6 (0.01/day)
So i'm running windows boot camp on an iMac Late 2014 (i7-4790K 4GHz, AMD Radeon R9 M295X), and I've been having overheating issues for a while now. Even on light load the CPU and GPU would overheat. So I got Throttlestop, and I can't undervolt anything because it's bootcamped, so I was forced to just reduce the cpu clock (and by a lot, like more than halve it.) and get MSI Afterburner and reduce GPU clock by half too in order for the computer to even work. I know the best option is to replace it or to get support from apple but its an 8yr old computer and that's going to cost a lot of money. But even after I decreased the clock on everything by so much, the computer still works pretty good on most things, even though it should be tenfold better.

However recently, I started playing games on the computer, and even though the CPU and GPU aren't overheating (they are still pretty hot though, even with the clocks all reduced), BD PRO keeps going on and off after a while (30 or so mins) and I don't know whats causing it. It might be another component that's also overheating, but I don't know how to fix that. Log is attached. It starts near the end at 20:01:37 and if you look before that points you can see that the GPU hits 95 and BD PRO doesnt go off, but later it goes off when CPU is 80C and GPU is 85C (which is normal for this old computer, crazy ik). Any help would be appreciated!



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ThrottleStop & RealTemp Author
Jun 1, 2008
5,112 (0.98/day)
If you do not want BD PROCHOT going off all of the time then clear the BD PROCHOT box on the main screen of ThrottleStop. This is how you tell the CPU to ignore whatever sensor is sending external throttling messages to the CPU. Is this a good thing to do? Probably not. I am not familiar with Macs so I have no idea what sensor is sending these messages.

If you have to reduce the CPU speed in half then there is obviously a major cooling problem. Many iMac laptops have known cooling issues. You can either take the laptop apart and try to fix the thermal problem or you can use ThrottleStop to reduce performance some more.


ThrottleStop & RealTemp Author
Jun 1, 2008
5,112 (0.98/day)
Pull it apart. Use it as a learning experience. If it does not run when you are finished, that is not much different than how it is running now. Unusable either way.

Could always sell it as is. People like Macs, even old ones. Not sure why. Someone might be happy with its abilities to surf the net and not much else.
Mar 28, 2018
1,501 (0.91/day)
System Name Space Heater MKIV
Processor AMD Ryzen 7 5800X
Motherboard ASUS TUF Gaming X570-PLUS WiFi
Cooling Noctua NH-U14S, 3x Noctua NF-A14s
Memory 2x16GB Team T-Force Dark Z DDR4-3600 C18 1.35V
Video Card(s) PowerColor RX 6800 XT Red Devil (2150MHz, 240W PL)
Storage 1TB WD Black SN750, 1TB WD Blue SN570, 2x1TB Crucial MX500 (striped array), LG WH16NS40 BD-RE
Display(s) Monoprice 35" 3440x1440p 100Hz
Case Phanteks Enthoo Pro M
Audio Device(s) Edifier R1700BT, Samson SR850
Power Supply Corsair RM850x, CyberPower CST135XLU
Mouse Logitech MX Master 3
Keyboard Logitech G610 Orion Brown
Software Windows 10 LTSC 2021
If you dare...

Do note that reassembly requires new adhesive. Also, beware of the exposed PSU as that can be potentially dangerous if touched.