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Alois Luong

PC randomly shuts down mid-boot up after changing CPU

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Posted · Original PosterOP



So I'm trying to build a 'rig' out of old/unused part I scavenged. I managed to get a working PC using this (1) motherboard (Gigabyte GA-945GCM-S2C) with this (2) pre-installed CPU (Intel Celeron Processor 430).

I wanted to upgrade this rig to make it a bit faster so I added more ram (which worked fine), then I replaced the CPU with an Intel Pentium 805 SL8ZH (the same one as this (3)). However, we I use this CPU, the PC would shut down mid-boot up (sometimes even seconds after powering it on).

I'm guessing my PSU is fine since it worked with the Celeron. Nonetheless, I still tried switching power outlets and PSU; disconnecting all non-essential components; cleaning all the connections; and applied new thermal paste. But still the problem remains.

Does this mean that the Pentium CPU is defective or is there another issue I've overlooked?


EDIT: I think that it's worth mentioning that the CPU is very hot by touch even if it was powered on for only a few seconds. Perhaps a cooling issue?


(1) https://www.gigabyte.com/Motherboard/GA-945GCM-S2C-rev-10#ov 

(2) https://ark.intel.com/content/www/us/en/ark/products/29735/intel-celeron-processor-430-512k-cache-1-80-ghz-800-mhz-fsb.html 


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It might be cooling since it turns off after a few seconds and is very hot to touch... the cpu might have reached its limit temp and forcefully shutted the system doen to avoid meltdown..

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reseat the cooler for it

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8700k/2080ti - 8350k/980ti - 4790k/1080ti - 4460/1070ti - r3600/v64 - p9950be/750ti


8750h/1060 - 3200u/vIGPU


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Two things, clear the CMOS, update the BIOS and try to get a better cooling solution... the pentium D is known to be a nuclear power plant, it was known to run HOT (it's basically two prescott pentium 4 cpus)

Main PC:

CPU: i5-8600k@5.0GHz | GPU 1: GTX 1660@2070MHz | GPU 2: GT 710 | RAM: 16 GB DDR4 3000MHz | Case: Lian Li PC-O11 Dynamic | PSU: Corsair RM 650i | SSD: Corsair MP510 480GB & Kingston UV400 120GB |  HDD: 2x 2TB WD Black | Motherboard: Gigabyte Z390 Aorus Pro | OS: Windows 10 Pro & Linux Mint 


Secondary PC:

CPU: AMD Athlon 3000G | GPU: Vega 3 iGPU | RAM: 8 GB DDR4 3000MHz | Case: Corsair 88R | PSU: Corsair VS650 | SSD: WD Green M.2 SATA 120 GB | Motherboard: MSI A320 A-PRO MAX | OS: Windows 10 Pro



Model: HP DL360e Gen 8 | CPU: 1x Xeon E5-2407 | RAM: 12 GB DDR3 1066MHz | SSD: Kingston A400 120GB | OS: CentOS 8



Model: MacBook Air Late 2010 | CPU: Core 2 Duo L9600 | RAM: 4 GB DDR3 1066MHz | OS: MacOS Catalina 

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What cooler is installed?


Also the mobo may not be capable of delivering enough power to that hungry for the time chip.



Desktop: i7-5960X 4.4GHz, Noctua NH-D14, ASUS Rampage V, 32GB, RTX2080S, 2TB NVMe SSD, 2x16TB HDD RAID0, Corsair HX1200, Thermaltake Overseer RX1, Samsung 4K curved 49" TV, 23" secondary

Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB NVMe SSD RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case


Dell XPS 2 in 1 2019, 32GB, 1TB, 4K


GPD Win 2

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Posted · Original PosterOP

So the cooler I was using was an old, second-hand cooler manufactured by some local company. Probably not good enough for the Pentium. I'll try finding a better one.

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