Help. Claymore crash only with Wn10

Hi all. My configuration is:
- ASROCK H81 Pro BTC / Celeron G1840 / 4gb RAM / SSD 64GB
- Raiser (here)
- 4x Gigabyte RX 480 8gb Gaming
- PSU Thermaltake 750W modular

I use Claymore 15.12 in Win7 x64 and I mined Zcash for 2 days without problem, with 1 or 2 RX 480. Driver ati vers. 17.
I need to use Win 10 because now I have 6 video card (all RX 480) but I always have crash just I start Claymore in Win 10.
At first I had an error about "stuck_driver" but after some attemps system crash without errors, only a grey screen.
In last 3 days I tried a lot of solutions but no 1 succesfully.

ATTEMPS:
1- Win10 (Home or Pro x64) with only 1 card. Crash
2- Win10 (Home or Pro x64) with more virtual memory. Crash
3- Different version of Claymore. Crash
4- Different variables of Claymore. Crash
5- Win10 full update installed. Crash
6- Different version of ATI. Crash
Always after 4-5min of Claymore running screen become grey and freeze. Reboot required.
A particular thing is that after reboot often appear a notific about WATTMAN of ATI that restart with default setting and I never changed it.

All same attemps tried on Win8.1 but same result.

I'm very frustrated. Can anyone help me? What can I try?
Someone talks about uppervoltage or undervoltage, someone changing BIOS, other about versions of Claymore or ATI driver...
I hope in your suggest to fix this.

Thanks