Continuous Beep, no display when using Core 2 Quad processor

funtikar · Sep 24, 2015

To understand my situation I'll explain a bit

So from my previous setup

Dell optiplex 755 customized build
MOBO : BTX proprietary mobo
PSU : 280w
CPU : Core 2 Quad Q6600
GPU : Asus GTX 750 2GB GDDR5 non ti
RAM : 6GB DDR2 only

This was working fine but I wanted to upgrade the mobo to MSI(ex NEC) MS-7594 (Intel G45/43 chipset), this basically means upgrading the casing as well

so I tried to build this
MOBO : preused MSI ( ex NEC, it was from some NEC commercial PC) MS-7594
Casing : Powerlogic Futura XV110
PSU : 450w
CPU : (same)Core 2 Quad Q6600
GPU : (same)Asus GTX 750 2gbgddr5 non ti
RAM : 4GB DDR3 dual channel
BIOS : AMI ver 2.59

the problem is after I switched on power... it just continuously beeps with no display.
So I tried eraser technique for RAM because many said thats the problem but its still the same,
I tried removing the GPU and so straight VGA from integrated graphics still same,

I never thought its the Processor but after changing the Processor to Core 2 Duo E4500(luckily i have this stock dell processor) it just boots and everything works , including the RAM and the GTX 750 also works...
is it incompatible? but I thought G45/43 supported C2Q and why does it continuously beep ,shouldn't that mean its the RAM fault?

I actually tried to boot my old system with the Core 2 Quad Q6600 Processor, its working, so its not faulty

or is there some bios settings/update thats preventing me to use the Q6600? is this it?

kanewolf · Sep 24, 2015

It is quite possible that NEC has a whitelist of CPUs in the BIOS and the Q6600 isn't one of them. You could try to find an updated BIOS, but since it was an NEC rather than a retail MSI product you might be out of luck.

funtikar · Sep 24, 2015

kanewolf :

I think so too :/ . I actually found a guy on youtube who managed to upgrade his NEC MJ18XA(MS 7594 mobo) from a E6550 to a Q8200 which is a quadcore but still isn't a Q6600. I asked him/her if he/she did any updates to the BIOS, still waiting for reply.

I'm currently hunting for BIOS update from nec and some japanese sites but it looks like its going nowhere. I can't even confirm for sure that the NEC MJ18XA uses MS 7594 let alone its variant. I'm also wondering how much does google index japanese sites as well

funtikar · Sep 24, 2015

kanewolf :

I tried to make an "updated BIOS", I mean modding BIOS rom. It turns out you are right, the CPU microcodes it have is very limited, it supports E4500,E8200, a couple of Q8200 variant and some other proc thats not Q6600.

So I tried "hacking" by adding the Q6600 microcode to the bios rom and flashing it but it still doesnt support the Q6600, but I suspect its because I took the microcodes from a different Chipset

Karadjgne · Sep 24, 2015

youll have to check the chipset of the mobo. For a q6600 youll need a chipset thatll support 1066MHz. To OC youll need one of the better chipsets like P35/45, x38 etc

http://processormatch.intel.com/MotherBoards/CompatibleBoards?componentName=Q6600

According to that, you shouldn't be having a problem, other than maybe the hacked bios. According to MSI, with 7592vS0.zip bios, you should be good to go. A G41/43/45 chipset is way too new (for lga 775) for NEC not to have one listed in a whitelist as that cpu was used on older 965 boards.

Kisianik · Sep 24, 2015

I think I just found the answer - why it is not working

This is link to very technical manual for MS-7594 http://elektrotanya.com/msi_ms-7594_rev_0a_sch.pdf/download.html you don't need to download it (I did and the rest of info is not useful)

Look at the example page:

CPU:

Intel Yorkfield, Wolfdale,
Conroe, Conroe-1M, Conroe-L - 65W CPU
(FSB1333/1066/800)

It has support only for 65 watt CPU.

Intel Core2 Duo E4500 @ 2.20GHz is 65 watt

Intel Core2 Quad Q6600 @ 2.40GHz is 105 watt

So your mobo is not giving enough juice to CPU.

Did I miss something?

funtikar · Sep 24, 2015

Kisianik :

I was actually just investigating that too, I really thought it was that too since I've double checked whether I didn't add the correct microcode but its all there. After examining all the cpu in the whitelist, the maximum possible TDP I could come up with was 95 Watt, like you said the official intel page says Q6600 uses 105 Watt. I guess this is a nogo for me and unless I can patch the Max TDP too XD

Kisianik · Sep 25, 2015

funtikar :

Do you have link to

all the cpu in the whitelist

?

Kisianik · Sep 25, 2015

If you want experimentation, you can attempt TAPE MOD Q6600 to decrease voltage, but this might brick motherboard. If it will not brick motherboard, you can try to use Throttlestop later to software overclock Q6600, it would be fun for sure. Throttlestop Guide.

funtikar · Sep 25, 2015

(I cant use the img tag) http://i.imgur.com/5xYgYOv.jpg

The notepad list below might not be correct, I was too lazy to check the Steppings. Is there a risk to break the Q6600? I dont care about the motherboard, Im thinking of just using the old setup or buying another (well researched) mobo this time...

funtikar · Sep 25, 2015

Kisianik :

any guides on how to do the tape mod on undervolting?

Kisianik · Sep 25, 2015

funtikar :

I missed this part. Is it possible or workable for AMD based processors, as I really want to know what my Inspiron 570 BIOS has in mind..... Is there a way to identify AMD processors by Microcode ID or CPUID, do you know?

Regarding undervolt Q6600, looking into my archives.... need time.

funtikar · Sep 25, 2015

Kisianik :

I think it depends on what kind of BIOS you have, I've just dive in myself too in BIOS modding so I dont know much. You mean you want to mod your Dell BIOS too? I think its also using AMI BIOS, so you'll need the MMTool to read or modify BIOS rom/dumps .
Just identify the processor through Device Manager/Speccy/CpuZ from there you can refer to cpu-world.com for its CPUID and other stuff.
Tools and tutorials from https://www.bios-mods.com/downloads/

Kisianik · Sep 25, 2015

Unfortunately I can not find undervolting right now, I have seen it once, but it disappeared.

However, even with lower voltage Q6600 will be Q6600, and if it is not in BIOS as permitted, I doubt it will be allowed to work, isn't?

funtikar · Sep 25, 2015

Kisianik :

ah it's okay... Thanks for trying anyway.... I went ahead and bought myself a another mobo although lacking the DDR3 ram support, its atleast a "legit" MSI motherboard (MSI P35 NEO3) and compatible with Q6600 or better. I'm not going to overclock it but knowing that some people have used it for gaming and OC gives me peace of mind in stock gaming.

Kisianik · Sep 25, 2015

funtikar :

Kisianik :

ah it's okay... Thanks for trying anyway.... I went ahead and bought myself a another mobo although lacking the DDR3 ram support, its atleast a "legit" MSI motherboard (MSI P35 NEO3) and compatible with Q6600 or better. I'm not going to overclock it but knowing that some people have used it for gaming and OC gives me peace of mind in stock gaming.

Glad to hear such a good resolution of that issue.

Karadjgne · Sep 25, 2015

P35 mobo's were among the better overclocking boards, basically beaten only the the x38 at the time, so you should be good for 3.2Ghz if you can keep the ram speed up.

funtikar · Sep 26, 2015

Karadjgne :

I see, From the current temps, I really do think I need a good heatsink too first

Karadjgne · Sep 26, 2015

Lol, yeah, the stock coolers on all the lga775 units were dismal at best, back then, it seems if it wasn't loud, it wasn't working hard enough. That was a time before you had an enthusiast class as such and OC was not nearly as mainstream as it is now. Back then, speed came from optimizing your ram, keeping low running percentage to keep usage out of the pagefile and coolers like a nh-d14 were just a dream, not a reality.

shinhosuck1973 · Oct 30, 2018

funtikar :

To understand my situation I'll explain a bit

So from my previous setup

Dell optiplex 755 customized build
MOBO : BTX proprietary mobo
PSU : 280w
CPU : Core 2 Quad Q6600
GPU : Asus GTX 750 2GB GDDR5 non ti
RAM : 6GB DDR2 only

This was working fine but I wanted to upgrade the mobo to MSI(ex NEC) MS-7594 (Intel G45/43 chipset), this basically means upgrading the casing as well

so I tried to build this
MOBO : preused MSI ( ex NEC, it was from some NEC commercial PC) MS-7594
Casing : Powerlogic Futura XV110
PSU : 450w
CPU : (same)Core 2 Quad Q6600
GPU : (same)Asus GTX 750 2gbgddr5 non ti
RAM : 4GB DDR3 dual channel
BIOS : AMI ver 2.59

the problem is after I switched on power... it just continuously beeps with no display.
So I tried eraser technique for RAM because many said thats the problem but its still the same,
I tried removing the GPU and so straight VGA from integrated graphics still same,

I never thought its the Processor but after changing the Processor to Core 2 Duo E4500(luckily i have this stock dell processor) it just boots and everything works , including the RAM and the GTX 750 also works...
is it incompatible? but I thought G45/43 supported C2Q and why does it continuously beep ,shouldn't that mean its the RAM fault?

I actually tried to boot my old system with the Core 2 Quad Q6600 Processor, its working, so its not faulty

or is there some bios settings/update thats preventing me to use the Q6600? is this it?

Can you help me please. I see this is very an old thread but hoping you could help me.I just bought an old pc with NEC MS-7594MA motherboard with Intel® Core™2 Duo CPU E7500 @ 2.93GHz. Like the problem you had, can't seem to find 4 core cpu for this motherboard.

Thank you.

Saga Lout · Oct 30, 2018

If this old thread isn't any help to you, shinosuck1973, please start a thread of your own and you'll get ore precise advice.

Thread closing time now.

Continuous Beep, no display when using Core 2 Quad processor

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