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Phenom II X4 850 not working in M2N68-LA mobo

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December 7, 2012 9:09:18 PM

Hello,
I have a CPU upgrade problem

I have a HP (Compaq-Presario) NY461AAR-ABA CQ5107C (http://h20000.www2.hp.com/bizsupport/TechSupport/Docume...)
Mobo is a M2N68-LA rev 5.00 mobo (http://h20000.www2.hp.com/bizsupport/TechSupport/Docume...)
Processor upgrade information from that site:
TDP: 95W
Motherboard supports the following processor upgrades:
NOTE: Only socket AM2+ processors are supported with this motherboard.
AMD Phenom II Quad-Core

Original CPU is a Family AMD Athlon X2 Model number 7550 CPU part number AD7550WCJ2BGH (I looked at it)

Upgrade CPU (which does not work) is a AMD Phenom II X4 Processor 850 3.3GHz Socket AM3, OEM
AMD specs (http://www.amd.com/us/products/desktop/processors/pheno...) for this are:
AMD Phenom™ II X4 Processor
Model Number Frequency Total L2 Cache L3 Cache Packaging Thermal Design Power CMOS Technology
850 3.3 GHz 2MB socket AM3 95W 45nm SOI

When I install the CPU the computer “starts” but then the case & CPU fan turn off after 20 sec or so. This is the same behavior when I start it up without a CPU at all. Original CPU goes back in and all is OK.

SO, it seems that my CPU should work as it is 95W, the type (AMD Phenom II Quad) and AM3 CPUs work in AM2+ mobos.

What am I missing here please?
Larry

Best solution

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December 7, 2012 9:30:43 PM

"" NOTE: Only socket AM2+ processors are supported with this motherboard.
AMD Phenom II Quad-Core ""
Guess HP means what they say . Is there a bios update on the HP site that includes upgrade to the AM 3 . Sometimes you just can't upgrade certain boards , my gigabyte 890 fx ud5 rev 3 cannot use FX chip but rev 3.1 can . Sucks
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December 7, 2012 9:34:11 PM

LDH2O said:
Hello,
I have a CPU upgrade problem

I have a HP (Compaq-Presario) NY461AAR-ABA CQ5107C (http://h20000.www2.hp.com/bizsupport/TechSupport/Docume...)
Mobo is a M2N68-LA rev 5.00 mobo (http://h20000.www2.hp.com/bizsupport/TechSupport/Docume...)
Processor upgrade information from that site:
TDP: 95W
Motherboard supports the following processor upgrades:
NOTE: Only socket AM2+ processors are supported with this motherboard.
AMD Phenom II Quad-Core

Original CPU is a Family AMD Athlon X2 Model number 7550 CPU part number AD7550WCJ2BGH (I looked at it)

Upgrade CPU (which does not work) is a AMD Phenom II X4 Processor 850 3.3GHz Socket AM3, OEM
AMD specs (http://www.amd.com/us/products/desktop/processors/pheno...) for this are:
AMD Phenom™ II X4 Processor
Model Number Frequency Total L2 Cache L3 Cache Packaging Thermal Design Power CMOS Technology
850 3.3 GHz 2MB socket AM3 95W 45nm SOI

When I install the CPU the computer “starts” but then the case & CPU fan turn off after 20 sec or so. This is the same behavior when I start it up without a CPU at all. Original CPU goes back in and all is OK.

SO, it seems that my CPU should work as it is 95W, the type (AMD Phenom II Quad) and AM3 CPUs work in AM2+ mobos.

What am I missing here please?
Larry



Do you have the latest bios for that motherboard?

And that power supply could also be too weak.

Do you have a friend with a more powerful power supply you could test?
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December 7, 2012 10:19:20 PM

cmichael138 said:
It could be that the 250W PSU isn't enough to run the new hardware.

http://h20000.www2.hp.com/bizsupport/TechSupport/Docume...


I kept my new CPU at the 95W that the old one had & that is the limit for my mobo. Since 95W worked before would total power drawing from the PSU still be an issue?
Thanks
Larry
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December 7, 2012 10:43:20 PM

jerry6 said:
"" NOTE: Only socket AM2+ processors are supported with this motherboard.
AMD Phenom II Quad-Core ""
Guess HP means what they say . Is there a bios update on the HP site that includes upgrade to the AM 3 . Sometimes you just can't upgrade certain boards , my gigabyte 890 fx ud5 rev 3 cannot use FX chip but rev 3.1 can . Sucks


http://en.wikipedia.org/wiki/Phenom_II
Socket AM3 versions of the Phenom II are backwards-compatible with Socket AM2+, though this is contingent on motherboard manufacturers supplying BIOS updates.

Sady I did not realize that a BIOS update was needed and HP just does not do that. I will see if my CPU is returnable.
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December 8, 2012 12:29:20 AM

Best answer selected by LDH2O.
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