Adding caps may help with improving voltage ripple, but they are placed very close to the socket.

The Serpent Rider wrote on 2024-09-21, 08:22:

Adding caps may help with improving voltage ripple, but they are placed very close to the socket.

Thanks, any advice on specs?

Obijuan1983 wrote on 2024-09-01, 11:58:

1.4vcore mod at back side of motherboard socket […]
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1.4vcore mod at back side of motherboard socket

E5500 @ 4135 MHz (14*295FSB)
OCZ DDR2 3-3-3-8 1T
Sapphire 9550 @580core/405mem

The attachment 3206105.png is no longer available

Just done 1.5vcore mod to use E5700 @ 4.425MHz 😀

Board can have easier volt mod with a potentiometer than "risky" socket mods. Image is my boards volt mod with 60k ohm pot to ground plane.

resources:
http://www.madshrimps.be/articles/article/670 … System-Part-1/3
http://www.controsensi.it/Mods/4CoreDual-SATA … ontents_Eng.htm
https://web.archive.org/web/20071020012031/ht … t=192571&page=2

Anyone can share with me the comands to flash the bios in dos of the ASROCK 4COREDUAL-sata2? Thanks

https://www.asrock.com/support/BIOSIG.asp?cat=DOS

Hi there, I have problem with my 4CoreDual-SATA2 mobo. Whenever I try to boot, regardless of whether it's from CD or hard drive, I get the 50AC code in the lower right corner and the whole computer hangs. What could be causing this? Do I need to downgrade the processor or update BIOS as first post said that on newest cpu PC won't boot? (I have two Pentiums on LGA 775 in my collection)

I have Core 2 Duo E8200 installed.

Okay, i don't know how it's boots but it turns out that my processor is unsupported. I'll try downgrade it to some 775 Pentium's from my collection

Your processor is supported as soon as you have the latest bios beta.

Hope someone here can help me. I'm getting desperate at this point and I am about to lose the will to live!

I cannot get the Asrock 775Dual VSTA to output a video signal at all.

I've tried resetting CMOS, new CMOS battery, reseating RAM, reseating GPU, reseating CPU. I've basically tried all the recommended steps when you get no video signal.

Components:

2GB of Kingston 1GB PC2-4200 DDR2-533MHz DIMM (tested on another board as working)

I have tried it with both these chips:

INTEL SLA98 Core 2 Duo E4400 2GHz Socket 775 Processor

INTEL SL9S9 Core 2 Duo 6400 2.13GHz Socket 775 Processor

Both boot fine, no beeps, no warnings, but I cannot get a video signal with either.

I am using this GPU:

Nvidia GeForce 6600 GIGABYTE GV-NX66256DP2 PCB Graphics Card 256MB DDR2 (PCIE)

Tried the VGA output and the DVI output to 2 different monitors.

I have now ordered (out of sheer desperation):

Asus Nvidia GeForce 6200 N6200/TD/128M/A (AGP)

Gigabyte Nvidia GeForce 6200 TC. GV-NX62LTC256T (PCI-E)

Will any of this combination work?

I just need confirmation that what I've put together should work, or if I'm trying to put components together that won't work anyway.

This isn't even the final build, I just need something to boot and give me a way of installing WinXP, so I can make further updates.

Many thanks!

XavierX wrote on 2024-11-11, 21:07:

Hope someone here can help me. I'm getting desperate at this point and I am about to lose the will to live! […]
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Hope someone here can help me. I'm getting desperate at this point and I am about to lose the will to live!

I cannot get the Asrock 775Dual VSTA to output a video signal at all.

I've tried resetting CMOS, new CMOS battery, reseating RAM, reseating GPU, reseating CPU. I've basically tried all the recommended steps when you get no video signal.

Components:

2GB of Kingston 1GB PC2-4200 DDR2-533MHz DIMM (tested on another board as working)

I have tried it with both these chips:

INTEL SLA98 Core 2 Duo E4400 2GHz Socket 775 Processor

INTEL SL9S9 Core 2 Duo 6400 2.13GHz Socket 775 Processor

Both boot fine, no beeps, no warnings, but I cannot get a video signal with either.

I am using this GPU:

Nvidia GeForce 6600 GIGABYTE GV-NX66256DP2 PCB Graphics Card 256MB DDR2 (PCIE)

Tried the VGA output and the DVI output to 2 different monitors.

I have now ordered (out of sheer desperation):

Asus Nvidia GeForce 6200 N6200/TD/128M/A (AGP)

Gigabyte Nvidia GeForce 6200 TC. GV-NX62LTC256T (PCI-E)

Will any of this combination work?

I just need confirmation that what I've put together should work, or if I'm trying to put components together that won't work anyway.

This isn't even the final build, I just need something to boot and give me a way of installing WinXP, so I can make further updates.

Many thanks!

In theory they should both work.
If possible, test your gpu on another system.
And/or test another video output of your gpu.

These boards are slow to POST, wait 60 - 90 sec.

Thanks for the info. I'll see if I have another board to test the GeForce 6600. And I'll wait at least a couple of minutes to see if there's any video output.

I'm waiting for the GeForce 6200 to turn up, so can't test that one yet. I'm not going to end up using either GPUs, it's just the one I want to use needs drivers installing first.

XavierX wrote on 2024-11-11, 21:07:

I cannot get the Asrock 775Dual VSTA to output a video signal at all.

BIOS version? What POST code do you get?

Bruno128 wrote on 2024-11-12, 12:27:

BIOS version? What POST code do you get?

If there's a way to get this information without having a video signal, let me know and I'll post it here.

Use Celeron D (FSB = 533MT/s), or Pentium 4/D (FSB = 800MT/s).
Sometimes Core 2 Duo/Quad are finicky on this board.

Alternatively use DDR1, instead of DDR2 (it may affect things if memory slots are the problem, 2.5 or lower CL memory timing is recommended).

Also, this board is NOT made to support 800MT/s RAM.
Make sure your sticks have 533- or 667MT/s JEDEC profile inside SPD.

XavierX wrote on 2024-11-12, 15:56:

If there's a way to get this information without having a video signal, let me know and I'll post it here.

One way is to pull the ROM chip out of socket and dump/flash it with a programmer but if it’s not an option you can indeed use the oldest components available like Pentium 4 and DDR1. There is a version sticker on the ROM chip so you can assume that one is minimal (if never updated) version number and look at cpu compatibility table.
To know the POST code you need a pci POST card.

XavierX wrote on 2024-11-11, 21:07:

Hope someone here can help me. I'm getting desperate at this point and I am about to lose the will to live! […]
Show full quote

Hope someone here can help me. I'm getting desperate at this point and I am about to lose the will to live!

I cannot get the Asrock 775Dual VSTA to output a video signal at all.

I've tried resetting CMOS, new CMOS battery, reseating RAM, reseating GPU, reseating CPU. I've basically tried all the recommended steps when you get no video signal.

Components:

2GB of Kingston 1GB PC2-4200 DDR2-533MHz DIMM (tested on another board as working)

I have tried it with both these chips:

INTEL SLA98 Core 2 Duo E4400 2GHz Socket 775 Processor

INTEL SL9S9 Core 2 Duo 6400 2.13GHz Socket 775 Processor

Both boot fine, no beeps, no warnings, but I cannot get a video signal with either.

I am using this GPU:

Nvidia GeForce 6600 GIGABYTE GV-NX66256DP2 PCB Graphics Card 256MB DDR2 (PCIE)

Tried the VGA output and the DVI output to 2 different monitors.

I have now ordered (out of sheer desperation):

Asus Nvidia GeForce 6200 N6200/TD/128M/A (AGP)

Gigabyte Nvidia GeForce 6200 TC. GV-NX62LTC256T (PCI-E)

Will any of this combination work?

I just need confirmation that what I've put together should work, or if I'm trying to put components together that won't work anyway.

This isn't even the final build, I just need something to boot and give me a way of installing WinXP, so I can make further updates.

Many thanks!

Actually the first question would be:
Do you ever post with your motherboard with your Core 2 Duo and memory at all?

If yes, it is not an issue related to bios or memory (probably), check gpu.

If not, you should update the bios first and make sure the memory is compatible.

Here are my results with the 775 4Core SATA2 Board. I also have a 775Dual VSTA and a 4Core VSTA and they behave basically identically.

I swapped all capacitors on the board and also changed the MosFets to more efficient ones, because the VRM is getting very hot with high TDP CPUs. On top, the board also has a voltmod for CPU and NB voltage and extra Tantal caps on the back of the CPU socket.

I was using this as my AGP Bench board back in the day but it's now my retro testbench with a QX6700. With regular air cooling (Zalman VF9900) I was able to clock my QX6700 to 3.73GHz for benches. 342.5 FSB is the highest I was able to get through SuperPi.

You can do a lot with these boards with a little bit of work. There's definitely potential, although they lack basic adjustability from factory (CPU vCore for example).

I'm back after testing with the 2nd GPU - Asus Nvidia GeForce 6200 N6200/TD/128M/A (AGP)

No video signal at all (again) - I left it a good 2-3 minutes and there is no video signal from either the VGA or DVI ports - tested on 2 different monitors.

I have to ask - is there something fundamental I'm missing?

I've only built "modern" PCs in the last 10 years, so maybe there's something I've missed with this older build?

I have the CPU connected, RAM, GPU and that's it - no hard drives, no optical drives, nothing - do I need an HDD to get it to have a video signal?

I have power running to the MB (20 pin) and CPU (4 pin) only - that's the only power connected for my tests - is this right?

I have to question even the most basic things at this point, I have driven myself into a nightmare over this!!

Also, I am putting the RAM into the yellow slots on the board - is that right?

Basically, treat me like I am a 5 year old and make sure there's nothing obvious I've missed here.

Getting very desperate now!!! Many thanks!

UPDATE - I have a video signal!

I decided to try with only 1 RAM stick connected and (luckily) the one I left connected was working properly and I finally got it to post with a video signal - so my other stick of RAM is faulty (tried it after on its own).

I would have never known this without randomly inserting only one RAM stick.

Does anyone have any recommendations for reliable RAM? I only need 2GB - I could get another one of the sticks I already have (to replace the faulty one), but I am now a bit dubious.

Many thanks.