I have a small problem to run 3 habaneros on windows 7.

So far I had no issues to run 2 boards on win7. I have recently purchased used board and this one gives me some weird problems.As soon as I connect 3rd one Overheat tripped message appears and I can't mine with that board.

If I disconnect my 2 original boards and start new one all is good with that board.

Then I connect my two older ones and they both will give me Thermal overheat error. (which is nonsense because they run fine if new board is not connected.

My original 2 boards have their own cooling and new one has Corsair H100i.

Any suggestions are welcome

Thank you very much

Update

Now I'm down to one board only

New board is giving me Overheat tripped(there are some USB lib errors with that) and one of my old ones same issue

I'm clueless as to what is going on.  

Mr teal,

thanks for coming in Thank you

That is how I'm running them.

3 instances of cgminer one per board.

cgminer.exe --usb HFA:1 --hfa-name HFA:1 -o  -u  -p  -o

 -u  -p  --hfa-fan 100 --hfa-temp-target 0 --hfa-temp-overheat 104 --hfa-fail-drop 0 --hfa-hash-clock 700 --api-port 4028

I have uninstalled WINusb driver and reinstalled it with same result. Only one board will mine

Update

If I run one instance for all boards 2 old boards are mining but new one is ZOMBIE. Now I can't run new board at all.

MrTeal I have Team viewer - if you have time I would be glad if you can look at it for couple of minutes

Do you have another Win7 system you can toss them on temporarily to see if they'll mine together on a fresh install?

May or may not help.  I run 4 boards on one PC.  I can never just plug them all in and start it up.  If I do I get one to 3 of them as Zombies.
I have to start CGminer with one board.  One board always seems to start fine. 
Then plug in a second board's USB but keep the PSU off.  Just with USB power.  Wait for the PC and CGminer to recognize the board, then turn on the PSU.  CGminer says something like "Hot Start", hiccups for a few seconds and then it goes and starts hashing.
I do this for each board.  Mine has been running for three weeks now.

I will try anything

I have done ritual dance and even priest is coming tomorrow. One never knows these days lol.

Many thanks for your help.

I have managed to get 2 boards working again. I have disabled new board and now both old boards are hashing away. So it has to be 3 and more boards are causing issues.

Not sure what you mean.  If you mean plugging in all the boards on USB only power, yes they will all show on cgminer and Zombie.  But they will come out of zombie if you start the PSU's quickly.  If I power on all boards and PSU's at once 1-3 will Zombie and NOT come out of it.  That's why I have to do it in the specific order.

Excellent!

I have always run all boards through one instance of cgminer.  Never tried multiple ones.  I have also never been able to pick up more than one board at a time with the pepper app.  Granted, I did not mess around trying to figure out how to do it either.
When I first tested each board on it's own I used the app to adjust pressure on the cooler.  Once that was adjusted and running well I did not really need the app anymore.  I like all the fancy colors, but besides the individual die temps, nothing else is crucial or not available in cgminer.  So I did not spend much time trying to make it work.

https://bt.irlbtc.com/view/716738.0

So the key component is definitely still available for a batch three. But the capital I can imagine needed is rather large. But your guys product freakin rock

Higher voltage will affect the power consumption, so it would be worth dropping the voltage. I find 910mV (shows up in cgminer as about .86 at the die) to be good for around 800mV. I would look at taking off the cooling head, cleaning everything good with isopropyl and reapplying the paste though. Unless the fans are extremely low flow, you should be able to get higher than 525MHz without overheating.

What's the model number of the fans?