I'm not saying you have to buy "dual channel" ram. Mine runs dual without "special ram". What I am saying is you have two memory channels on your mobo. From what I understand, you've tried all slots filled (512, 512, 512, and 256), and you've tried Two 512's but both on the same channel, leaving the other channel open. Now if the mobo requires matching ram maybe it's not able to use the channel with 756 and it's being treated like it had 0 in it. Since neither of us know for sure and I can't find any documentation online about it, perhaps a live chat with a tech could atleast rule this out, by reassuring yourself that A: the ram is the right kind and in the right slots, and B: that it's not the problem.

Aside from the Ram, I've been reading at AMD that a Bios Update was needed, but I also, couldn't find the bios update for your board when upgrading to an X2. If you're online with the tech you could ask to make sure you have the right bios. Let's face it, you've tried nearly everything else. LOL

I haven't heard from you in three hours and was getting a bit worried for you. LOL

My guess is that the WIN XP is a custom version that doesn't support dual core processors properly.

Something else, is when you tried the two 512's in the first and third slot, why didn't it post?

My guess is that the WIN XP is a custom version that doesn't support dual core processors properly.

And that's one more thing he could ask the HP/CPQ tech

If the Ram was not good it would not boot !

I doubt the Win XP is a custom version as Compaq do a X2 with that mobo.

He was advised by another to update the BIOS and apparently did so, whether it is the correct one and the BIOS flashed correctly I know not. Howether it does boot and it does run, it shows the X2 3800+ both in BIOS and in XP, this leads me to believe that software is at fault in the first instance.

If he uses a new BOINC account that is set for default it should show 50-50, if not we can rule out BOINC.

---

Not all Czech`s bounce but I`d like to try with Barbar ;-)

Make no mistake This IS the TEDDIES TEAM.

Tony certain mobo`s will not post if trying to run dual in the wrong slots, they are very specific.

---

Not all Czech`s bounce but I`d like to try with Barbar ;-)

Make no mistake This IS the TEDDIES TEAM.

Tony certain mobo`s will not post if trying to run dual in the wrong slots, they are very specific.

Which is exactly why I think he should find out the answer from them. I can't find it anywhere in the online manuals displayed. It would eliminate that one way or the other.

The recovery partition contains drivers and settings etc. Best to gather your drivers, delete recovery partition and do a re-install with a full version of XP home or pro.

---

Not at home now, but will do so as soon as I return.

Will post results.

BP, humour me......

Copy and paste your Boinc folder from Program files to A.N.other location.

Uninstall Boinc

restart

Download a fresh copy of BOINC and install using a brand new user etc., Do not alter anything. See what happens.

BIOS was flashed with current version.

Even ran AMD's Dual Core Optimizer.

Yeah, I needed to get out and step away from the situation a little!

Be back home around 6:00pm est.

Aside from the Ram, I've been reading at AMD that a Bios Update was needed, but I also, couldn't find the bios update for your board when upgrading to an X2. If you're online with the tech you could ask to make sure you have the right bios. Let's face it, you've tried nearly everything else. LOL

I haven't heard from you in three hours and was getting a bit worried for you. LOL

Please do not alter ANYTHING in BOINC.

Let`s rule out the Boinc settings first !

I look forward to hearing from you.

---

Not all Czech`s bounce but I`d like to try with Barbar ;-)

Make no mistake This IS the TEDDIES TEAM.

No idea.

My "guess" is that this ("low-end") mobo requires fill in 1-2-3-4 order.

Just a guess.

Something else, is when you tried the two 512's in the first and third slot, why didn't it post?

When I did the destructive re-install of WinXP, it wiped out all of my BOINC.

I did have to reinstall completely fresh verion (5.4.11), replacing the wiped out version of 5.4.9.

EDIT--> But I did keep the same user id. <-- End EDIT

So, this problem exists with both BOINC 5.4.09 and 5.4.11

But as mentioned earlier, I suppose there is a 0.00000001% chance my BOINC / Rosetta preferences are not properly set up for dual core.

We can review at ~6:00 pm eastern.

Please do not alter ANYTHING in BOINC.

Let`s rule out the Boinc settings first !

I look forward to hearing from you.

One other thing I would do is to uninstall the AMD Optimiser if possible from add/remove programs. I don`t use it and it`s not necessary for Boinc.

It does alter the graphic timing...

AMD Dual-Core Optimizer - The AMD Dual-Core Optimizer can help improve some PC gaming video performance by compensating for those applications that bypass the Windows API for timing by directly using the RDTSC (Read Time Stamp Counter) instruction. Applications that rely on RDTSC do not benefit from the logic in the operating system to properly account for the affect of power management mechanisms on the rate at which a processor core's Time Stamp Counter (TSC) is incremented. The AMD Dual-Core Optimizer helps to correct the resulting video performance effects or other incorrect timing effects that these applications may experience on dual-core processor systems, by periodically adjusting the core time-stamp-counters, so that they are synchronized.

---

Not all Czech`s bounce but I`d like to try with Barbar ;-)

Make no mistake This IS the TEDDIES TEAM.

I don't think it's a problem with boinc, unless something has changed he can recreate the problem with anything that tries to max out two cpu's.

---

Thanks Ethan but let`s rule it out altogether, then we can move to the next !

O.k. so we can rule out AMD Optimiser BP !

One down !

---

Not all Czech`s bounce but I`d like to try with Barbar ;-)

Make no mistake This IS the TEDDIES TEAM.

Yeah, I didn't re-install this when I did the WinXP re-install.

So, "problem" exists both in the presence, and absence, of AMD Dual Core Optimizer.

One other thing I would do is to uninstall the AMD Optimiser if possible from add/remove programs. I don`t use it and it`s not necessary for Boinc.

It does alter the graphic timing...

AMD Dual-Core Optimizer - The AMD Dual-Core Optimizer can help improve some PC gaming video performance by compensating for those applications that bypass the Windows API for timing by directly using the RDTSC (Read Time Stamp Counter) instruction. Applications that rely on RDTSC do not benefit from the logic in the operating system to properly account for the affect of power management mechanisms on the rate at which a processor core's Time Stamp Counter (TSC) is incremented. The AMD Dual-Core Optimizer helps to correct the resulting video performance effects or other incorrect timing effects that these applications may experience on dual-core processor systems, by periodically adjusting the core time-stamp-counters, so that they are synchronized.

How about this driver?
AMD Athlon™ 64 X2 Dual Core Processor Driver for Windows XP and Windows Server 2003 Version (x86 and x64 exe) 1.3.2.16

Download from this page.
This definately wasn't neccessary on my Athlon 64 x2 3800+ running on Win2k. I believe you confirmed that you're running WinXP Home with SP2. Which is supposed to work.

I've run into corrupted windows cds in the past.. and had to use a different cd drive and a good windows cd to install a working copy of windows onto a client's machine.

---

---

I run a Pentium D with XP home without problem ....