Question about Mach Speed MK8-939A (VIPERMK8939A) Motherboard

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Not posting I have a brand new Mach Sped MK8-939A mobo, AMD Athlon 64 3700+ cpu, heatsink and fan for the cpu (purchased as combo), new 500 watt power supply, new sata HDD. I installed all components using the raised pins so the mobo didn't sit directly on the case (risk shorting) turned on the pc, and NOTHING!! No post, cpu fan doesn't turn, no video, CD ROM won't open to insert mobo driver CD, no error beeps. Power light is on, HDD light on case lit. Neither CD ROM nor DVD ROM will open unless I unplug ribbon cable, then with power only, doors will open. Any troubleshooting suggestions? I bought all new inners because my ASUS mobo with AMD 3700+ cpu did the same thing. It was working then on reboot, went totally brain dead. I have tried known good memory and video cards from other machines, but no change. HELP!!!!!

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Re: Not posting

Maybe a silly question to ask; but did you connect the processor power lead, as unlike some processors this needs a seperate supply.

Posted on Dec 18, 2006

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I have a Lenovo 3000I have a Lenovo 3000 J115 7387-A32, I replaced the AMD athlon 64x2 Dual-Core 3600+ with a AMD Athlon X2 5000+ 3200mhz Scoket AM2+ CPU, when I turn on the computer the fan in the power...

I think the first thing to do is go back to the cpu Fan and check the plug and make sure you are on the pins as should be make sure that there isn't any Bent pins . Continue on to the next fan in question.If not then I would not continue Running this machine Until I had the fan problem fixed. It doesn't take long to mess things up. I am surprised that it will run . I would like to have faith in the hardware monitor to propely shut it down.then I would go to the power source Plug on the motherBoard . Check that it is connected good and try it for a short run on then off to make sure that the fans are running like they are supposed to.

Nov 19, 2009 | Motherboards

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Ms7241 mobo no post no display

I'm just going to post some stuff, and you see what you may think may help.

1.I hope you observed the anti-static guidelines, or you have silently toasted your delicate computer components. Static will silently fry them out. You won't see it or feel it.

(Reseated CPU? Static will fry that thing out F-A-S-T! Didn't clean the top of the CPU, and the bottom of the heatsink, and apply new thermal paste? CPU is fried. Takes about 10 minutes or so for an Intel. Takes about 20 to 30 seconds for an AMD!)
2.Floppy drive has no power? It attaches straight to the PSU. Either it is bad, or the PSU. Even if you swapped PSU's, it doesn't mean the one you installed is good.
If the PSU has a weak voltage rail, it won't give enough wattage to the processor.

A.ALL the lights use less than 1 watt.
B.EACH fan uses 2 to 3 Watts.
C.A harddrive sitting there spinning, because there is no processor to tell it what to do, uses about 2 to 3 Watts. (Read on)
D.When BIOS tries to turn the processor on, it can't. Why? Because processors use anywhere from 55 watts to 125 watts. Depends on the processor. If the PSU has a weak voltage rail, the processor won't turn on.

Jul 06, 2009 | Motherboards

2 Answers

Cpu fan runs at high speed all the time

the problem is that the mother board you are now using has a 4th wire that sences cpu temp this allow the heat sink fan to change speed to get this to work correctly you will need to replace the fan with a 4 wire style. what is happening is your not getting a temp siginal back to motherboard so the fan controller think it hot and send full power to fan alll the time the stock fan in hp systems is not very good any way .Get a good heat sink and fan to fit your new board ebay has them very cheap 5.00 to 20.00 this will all so increase you system temp and all get the proper cooling when you really need it.

Jun 10, 2009 | ASUS M3A78-CM AMD 780V AM2+ Phenom FX /...

1 Answer


the short answer is YES you need the additional power to the 4 pin molex.

Post your power supply brand and specs along with the copmplete spec of your PC and I'll be able to give some further advice regarding best option for you

Jul 16, 2008 | Intel Motherboard

3 Answers

Brand new motherboard wont start up

try taking 1 stick of ram off the motherboard, and boot up with 1 stick in slot 1 or 2.
You should get some beeps, 1 is system Ok.
3 is usually RAM/Graphics problems.
Also try booting with the motherboard setup disk in the CD Drive, it may be looking for files to initialise the Board.
And the obvious, check that all cabling is correct from mainboard to front panel. Power on/off Reset et,c.
View the user manual to see if the board has any jumper/dip switch settings for different configurations.

Mike @ compurepair.

Mar 14, 2008 | Motherboards

3 Answers

New cpu but no video output


Feb 28, 2008 | Intel Motherboard

1 Answer

Dead Mobo?

Do you have both power connectors from the PSU hooked up?

You need both the large one near the ram, and the smaller square 4-pin one near the printer port

Nov 22, 2007 | FIC K8-800T Motherboard

1 Answer

Heatsink/fan mounting problem

I have never heard of using a certain cpu cooler that would void a warranty.if the cooler is for the cpu then use that 1 i/e the arctic

Oct 04, 2007 | AMD Motherboard, nForce4 SLI, S939, Athlon...

1 Answer

Your CPU may have a problem

Have you removed all memory, other cards and unhooked all other drives to see if a short exists there? With a 300W PS some other component may be pulling too much that the CPU can't start so it tells you the problem is with the CPU or The CPU its refering to is on the video card? Good Luck, Tim

Feb 10, 2007 | Albatron K8T800 (K8X800 PRO LL)...

2 Answers

NO Power up at all except standby light

I know you say you have the cpu fan connected and assume you have the front panel power switch and restart cables etc.. connected, but have you connected the processor power supply lead from your PSU to the board as Sempron have a seperate power lead to the board to power it up, unlike the old Athlon processors. If you bought the CPU, Heatsink and fan together then it will already have thermal paste on the Heatsink, so don't apply any more. Hope this helps, as I don't wish to teach you how to suck eggs! Please rate this solution

Nov 09, 2006 | ASUS K8V-X SE Motherboard

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