screen is freeze, server work client stop

[Acodin]

Hello, i have problem with tekkit.

I have Win10, 64 bit, 8 GB RAM, Java version 7 update 79 (build 1.7.0_79-b15) 64 bit

Launcher start perfectly, tekkit modpack downloaded normally, but when i play game after few minutes, at different times my client is stop. Do not crash, white screen, black screen, but it simply stops. When i look to console, there are no errors!! When in client click "Esc" in console shows "

[B#347]  2016-12-04 13:22:14 [INFO] [Minecraft-Server] Stopping server
[B#347]  2016-12-04 13:22:14 [INFO] [Minecraft-Server] Saving players
[B#347]  2016-12-04 13:22:14 [INFO] [Minecraft-Server] Saving worlds
[B#347]  2016-12-04 13:22:14 [INFO] [Minecraft-Server] Saving chunks for level 'New World'/Overworld "

 

Highter logs, says "Minecraft-client: stopping!" maybe this is the reason?

Logs: http://wklej.to/bchKz

Anyone can help me? Sorry for my english, in a few minutes illegally record a video to show accurately what is happening.