PC crash without message

Please, i´m sorry because my english is awfull.

I install ESS beta, and it's going ok until i try to use emule. PC crash (reboot) without blue screen, no messages in event log. It's very strange.
I suppouse that i have a RAM trouble but i run memtest86 and its' ok.

I use W2000 pro.

Ideas??

 

Do you have the ports for eMule open in the firewall? ports 4662 tcp and 4672 udp. (defaults before version .47c)

 

yes, the ports is open

 

if i disable personal firewall i can use emule and bittorrent ok. Personal firewall reboots the PC when emule adds multiples conections.

 

I use the P2P program Winmx. All worked fine for several weeks after the ESS install, but now with heavy uploads & downloads going, BSOD's are becoming a daily ocurrance. I cannot say for certain this is due to ESS, but it has never happened with Vista-Home Premium prior to installing ESS.
My event logs on pc provides no explanation.