Pc won't boot after cpu change

Cenx

Reputable
Apr 15, 2014
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Ive got an Dell Optiplex 620 and I changed my Intel Pentium D HT with an Intel Core 2 Duo, and my Pc won't boot, no BIOS would show just a black screen as well the power button stays orange and doesn't change after 5 minutes but when I change the processors back it works again and boots up normally. Please help.
I know that it is the correct size socket and the motherboard is the Dell 0F8098, if that helps.
The PSU Is 350 watt. I also have an ATI Radeon HD 4850 Graphics card and 4GB of Ram installed.
 

Kisianik

Dignified


Your PC full model name is Optiplex GX620. This is the list of compatible processors:

Intel® Pentium® D Processor 960
(4M Cache, 3.60 GHz, 800 MHz FSB) 130 W
Intel® Pentium® D Processor 950
(4M Cache, 3.40 GHz, 800 MHz FSB) 130 W
Intel® Pentium® D Processor 945
(4M Cache, 3.40 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 940
(4M Cache, 3.20 GHz, 800 MHz FSB) 130 W
Intel® Pentium® D Processor 935
(4M Cache, 3.20 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 930
(4M Cache, 3.00 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 925
(4M Cache, 3.00 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 920
(4M Cache, 2.80 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 915
(4M Cache, 2.80 GHz, 800 MHz FSB) 095 W

Select Intel® Pentium® D Processor 840
(2M Cache, 3.20 GHz, 800 MHz FSB) 130 W
Select Intel® Pentium® D Processor 830
(2M Cache, 3.00 GHz, 800 MHz FSB) 130 W
Select Intel® Pentium® D Processor 820
(2M Cache, 2.80 GHz, 800 MHz FSB) 095 W
Select Intel® Pentium® D Processor 805
(2M Cache, 2.66 GHz, 533 MHz FSB) 095 W

Core 2 Duo is not on the list - it is not compatible. Generic Intel rules do not apply to Dell - Dell modifies BIOS to limit endless CPU upgrades, so people would buy more PCs from Dell.

More on upgrading GX620 read here http://www.tomshardware.com/answers/id-1679484/upgrading-cpu.html#10827412 there is a link to Dell Community Forum GX620 Guide in the Best Answer post, read it as well.

If you have questions about newer video card for GX620, ask.

Anything else I can help you with?
 
pentium d and core2's do use the same physical socket, but that doesn't mean your bios has any idea what the chip is.

at the very least, you'll need a bios update, if there's one available. (assuming your chipset is compatible with a core2)
 

Kisianik

Dignified


Your PC full model name is Optiplex GX620. This is the list of compatible processors:

Intel® Pentium® D Processor 960
(4M Cache, 3.60 GHz, 800 MHz FSB) 130 W
Intel® Pentium® D Processor 950
(4M Cache, 3.40 GHz, 800 MHz FSB) 130 W
Intel® Pentium® D Processor 945
(4M Cache, 3.40 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 940
(4M Cache, 3.20 GHz, 800 MHz FSB) 130 W
Intel® Pentium® D Processor 935
(4M Cache, 3.20 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 930
(4M Cache, 3.00 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 925
(4M Cache, 3.00 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 920
(4M Cache, 2.80 GHz, 800 MHz FSB) 095 W
Intel® Pentium® D Processor 915
(4M Cache, 2.80 GHz, 800 MHz FSB) 095 W

Select Intel® Pentium® D Processor 840
(2M Cache, 3.20 GHz, 800 MHz FSB) 130 W
Select Intel® Pentium® D Processor 830
(2M Cache, 3.00 GHz, 800 MHz FSB) 130 W
Select Intel® Pentium® D Processor 820
(2M Cache, 2.80 GHz, 800 MHz FSB) 095 W
Select Intel® Pentium® D Processor 805
(2M Cache, 2.66 GHz, 533 MHz FSB) 095 W

Core 2 Duo is not on the list - it is not compatible. Generic Intel rules do not apply to Dell - Dell modifies BIOS to limit endless CPU upgrades, so people would buy more PCs from Dell.

More on upgrading GX620 read here http://www.tomshardware.com/answers/id-1679484/upgrading-cpu.html#10827412 there is a link to Dell Community Forum GX620 Guide in the Best Answer post, read it as well.

If you have questions about newer video card for GX620, ask.

Anything else I can help you with?
 

ASK THE COMMUNITY

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