k8N Neo2 problem - PSU switch turns system on, then no POST

[mrnab]

Hi,

I am building a new system with the following:-

MSI k8N Neo2 platinum
Athlon 64 3200+
Asus Star Ice CPU cooler
ATI Radeon 9500 pro
Crucial DDR 3200 512MB x 2
Tagan 480W PSU TG480-U01
Silverstone Temjin TJ05 case


The problem I am getting is as follows: once I have connected everything to the motheroard and switch the PSU on using it's own button, the whole system starts up - the HDDs spin, the CPU cooler fan, system fan and motherboard fans all start, but I get no POST just a blank screen with no output to my monitor. This happens without me pushing the case power button; I have checked the case leads and they are all ok - indeed, this happens even when there are NO leads fron the case front panel conected to the motherboard at all - the system just starts as described above when I push the Tagan PSU switch.

When I had the K8Ns back-plate connected, I was getting the same error signal that suggests there is something wrong with the memory (3 red LEDs and 1 Green, I think); but I check the memory installation which was ok, and my memory is working fine with my old system.

To try and figure out what was going on, I gradually disconnected EVERYTHING from the motherboard, even the CPU, and took it out of the case and stood it on a large piece of cardboard. After connecting the power supply to it I pushed the PSU button and the same thing happened - the motherboard started up (I know that it started because the motherboard northbridge fan started and also I have the cpu cooler fan attached still, which also started up).

I then tried my old 300W PSU to see if the problem was with the Tagan and guess what - exactly the same problem occured; I know for sure my old PSU works as I am using it in my old system right now!

So, my question is does anyone know what's going on / have any suggestions? I personally think my motherboard is faulty - can anyone confirm the likelyhood of this?

Any help would be MUCH appreciated.

Thanks.

 

[YabbyU]

I had the MSI neo 2 platinum with a 3500+. It worked great for about a week. One morning I went to boot and the fans spun 1/2 second then nothing. I thought my PSU (480 antec)was bad so i hooked up an old 350 watt antec and it booted....so I rma'd the 480 and got a 550.

Hooked up the 550 and had the same problem, fans spin a 1/2 second then nothing. So then i bought a thermaltake 480 watt and the board fired up(fans spinning, got video beeps etc) but no post, just a blank screen. I tried everything you did to get it to post. I finally rma'd the board it for an ASUS a8v deluxe and have had no problems at all.

I never could figure out why the board acted so wierd with 4 different PSU's. MSI support was perplexed by the problem as well....I probably called them 10 times.

 

[Omega Ohm]

Supposedly, there's a problem with the MSI and Abit 939 boards and Antec power supplies.





Scroll down to Italicized text.

 

[monkelyoy]

There are many anecdotal reports about bad MSI boards. My board would not power-up so I purchased a new Enermax 480 cooler giant with dual rails (total 32 A@ 12 V). It would power up with this but I had :

1. No detection of my LAN card
2. My wireless mouse and keyboard stopped working
3. Significant graphic anomalies with Radeon card.

Unfortunately, I cannot return it- New Egg says that it can only be returned for the same model. I wonder why this is? Multiple returns? If you look at the New Egg site there are many good reviews so I don't know what to think. I ended up ordering an Abit board. I'll keep you informed.