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08-04-2011 09:23 PM
I have an hp compaq dc5100 sff, and i want to use a pentium 4 661 cpu.
I updated the bios to 1.09 which supports the 661, but i also need to install the microcode update 1.10A to support this cpu.
So i downloaded that, made the floppy disk, and when i run it it says i currently have version 1.09 installed, and asks if i would like to install the version 1.10 off the disk, so i hit OK, it says it upgraded successfully, but i tried the 661 cpu and it still didnt work. I ran the microcode update utility again, and it says that i still have version 1.09 installed, so i don't know whats up with that. If anyone has any ideas, they would be appreciated, i spent hours trying to get it to work and came up with nothing.
08-05-2011 06:36 AM
Sometimes you have to run that microcode update a few times to get it to stick. Try a different floppy if you have to.
I have come across many people that have had that issue. I think I had it once too (on a d530) and running the update a several times finally worked for me.
Now regarding that processor...I know it says it is supported, but I have not ever heard of anyone being able to get the Pentium 4 processors ending in 1 to work on the dc5100, or dc7100 no matter what.
So, if you get it to work, please post back and let us know that you can run a 661 on a dc5100.
08-05-2011 09:03 PM
Well, i still cant get the microcode update to work, still at 1.09, not 1.10.
I have tried using a few different floppy disks, and even a few different floppy drives, ran the updater well over 50 times already, but it just doesnt seem to work.
And just something interesting about the cpu, you say people are unable to get processors ending in a 1 to work in these systems, well, the original cpu for this dc5100 i have here is a Pentium 4 521.
Im wondering if i should just try to get another 661 with a different stepping to try.
08-06-2011 08:20 AM
I guess you can try another 661 sSpec, but if it were me, I would just install the Pentium 4 650 and it will work just fine.
200 MHz slower than a 661 but still 600 MHz faster than your current processor. The 660 uses too much wattage and probably gives off a ton of heat.
04-05-2013 10:01 AM
I try use the 661 with the DC5100, met the same problem, but the cpu worked vary well with XP professinal OS, and very fast,so I don't care about that message, and not too much heat,cpu is very cool.