Question I upgraded an AMD phenom II X4 840T to an FX-6300

Feb 19, 2023
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I upgraded an AMD phenom II X4 840T to an FX-6300, both use A3 socket, so just plug in. Machine will not boot with new CPU, can't seem to find a way to upgrade BIOS, it is Legacy. Old CPU works fine, did CMOS, HP Pavilion bios 6.04...any thoughts ? Needed a CPU with sse 4.2 or later instructions for Photoshop.
 

USAFRet

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I upgraded an AMD phenom II X4 840T to an FX-6300, both use A3 socket, so just plug in. Machine will not boot with new CPU, can't seem to find a way to upgrade BIOS, it is Legacy. Old CPU works fine, did CMOS, HP Pavilion bios 6.04...any thoughts ? Needed a CPU with sse 4.2 or later instructions for Photoshop.
Per the (unknown) motherboard info, what does it say about BIOS versions and different CPUs?
 

DSzymborski

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I upgraded an AMD phenom II X4 840T to an FX-6300, both use A3 socket, so just plug in. Machine will not boot with new CPU, can't seem to find a way to upgrade BIOS, it is Legacy. Old CPU works fine, did CMOS, HP Pavilion bios 6.04...any thoughts ? Needed a CPU with sse 4.2 or later instructions for Photoshop.

If you can't upgrade the BIOS then you're out of luck and the FX-6300 won't work. Unfortunately, this is a very old prebuilt so it will be poorly documented and you won't get much help from hp, and the fact that it is a prebuilt makes it less likely that a BIOS upgrade even exists. It's one of the many reasons that pre-builts become e-waste quicker than aftermarket parts.

If your needs are such that you have to specifically use Photoshop, a far more ambitious upgrade should be in the works than slapping in a disappointing 10-year-old CPU to replace a 12-year-old CPU.
 
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logainofhades

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You will never get that CPU, to work in that board. You need a totally new system. If money is tight, you can go with a 2nd gen i7, or higher, office refurb. Significantly more performance, than what an FX will deliver. I had an FX 8320, at one time, myself, and that chip was slower than my i5 2400.