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CPU recognized by the BIOS but the PC shuts down by itself before starting Windows.

ChrisPendragon -  
 ChrisPendragon -
Hello,

I would like to invoke your expertise (just like that!^^) to try to find a solution to my problem. I just replaced the original core i5 3550 lga 1155 on my PC with an i7 3770K lga 1155. The PC is originally an Acer Veriton M4620G, and the BIOS was updated last Christmas when I installed a Sapphire RX 570 Nitro + graphics card.

Anyway, the installation went smoothly; I removed the motherboard, installed the BIOS and the CPU cooler, the PC powers on, and I enter the BIOS which perfectly recognizes my new CPU. However, as soon as I try to boot into Windows, the PC shuts down completely before I even see the logo. On the other hand, I can stay in the BIOS for two hours without any issues. If I boot from the Windows CD (or any live CD), the PC stays on for two minutes before shutting down.

Given that the CPU is recognized in the BIOS, I doubt there's a compatibility issue with the motherboard. A CPU problem also seems unlikely under these circumstances. The BIOS indicates that the CPU temperature is 40-45°C. I tend to lean towards a power supply issue being too weak (500W), which is why I've ordered a 700W one, or overheating, but that seems a bit quick, and the CPU cooler is working fine.

Here’s my configuration: 22GB of RAM (tested with a single stick, same results)
Sapphire Radeon RX 570 Nitro + graphics card, 8GB VRAM
FSP 500W power supply
PNY 240GB SSD + 2 WD 1TB HDDs

It's worth noting that according to my research, this model of PC was also originally available with this model of CPU.

If anyone is able to shed some light on this, I would be very grateful.^^

Thank you in advance.

Configuration: Windows / Edge 84.0.522.52

7 answers

  1. KOjemenbaslesc
     
    Hello, if it stays on only in the BIOS, you should check that the RAM has a frequency compatible with the new processor and try to force it to a supported frequency if the motherboard is overclockable. A BIOS update doesn't mean that the basic options are perfectly compatible. It's likely a base clock issue with the RAM, so consider resetting the CMOS or leaving only one stick of RAM to see if it starts up with a different message.
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  2. ChrisPendragon
     
    Hello and thank you for your response.
    So I tried the CCmos last night and it doesn't change anything.
    My RAM is Corsair DDR3 at 1333MHz, according to Intel's specs on the CPU it requires 1333 or 1600, so it should be fine, and the test with a single stick was also a failure. Note that I managed to see the logo Windows for 1 second, and that on a live CD Ubuntu it lasts 2 minutes during the first loading screen before shutting down. Well, my package with my new power supply and a syringe of thermal paste has arrived at the relay point, I will see how it goes.
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  3. KOjemenbaslesc
     
    It's a simple opinion, but scratching around doesn't help at all. Changing the power supply is fine since you have it, changing the thermal paste requires a minimum of basic knowledge, and it's not something to take lightly or half-heartedly. If there are nylon clips on your heatsink, you should also replace them with new ones.
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  4. ChrisPendragon
     
    Well, big flop for the power supply change, it doesn't make any difference... As for the thermal paste change, don't worry, I've been doing it regularly on various PCs for about 10 years and I've never had any problems. Especially since in my case, the cooler is screwed in. However, I strongly doubt that it will solve the problem. The ideal would be to test the CPU on another motherboard; I have an HP PC that I recovered a few months ago, I'll see what socket it's running on. If anyone has any other ideas, I'm open to suggestions. ;)
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  6. flo88 Posted messages 28482 Registration date   Status Contributor Last intervention   Ambassadeur 5 168
     
    Hello

    If you put the old processor back and everything works, then the i7 is dead.......

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  7. ChrisPendragon
     
    Hi Flo, and thanks for your reply. That's also the direction I'm leaning towards, knowing that it's a refurbished CPU. But it's strange that the BIOS detects it...
    Also, there was a label under the CPU, right in the middle, it doesn't seem to interfere with the contacts, and afraid of messing things up I left it there. Should I have removed it?
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    1. flo88 Posted messages 28482 Registration date   Status Contributor Last intervention   5 168
       
      There are no pins in the central part.....but yes, it needs to be removed to try.
      The fact that the CPU works in the BIOS but not when you normally start the computer may be because in the BIOS there is no load on the processor; if one core is defective (for example), you wouldn't know it in the BIOS, but as soon as Windows starts, you would.
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  8. ChrisPendragon
     
    Alright, anyway I've contacted the seller to inform them of the issue, we'll see... I'll try to remove the label to see, but indeed there are no pins in that spot, that's why I wasn't too worried about it at first.
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