Laptop sometimes won't produce sound when connected to external speakers

[apnomid]

Anyone can help me?
Recently when I upgraded my laptop's OS from win 8.1 to win 10, I'm experiencing a difficult issue about my sound system. Sometimes when I plugged my external speakers in, it won't produce sound unless i plugged it out again and then my built in speakers of my laptop will produce sound, so every time I plugged my external speakers again it stop producing sound,

I checked my external speakers if it's the issue, by plugging my those to different devices but it seem work fine. That's why i came to conclusion that maybe it's my laptop's system fault.

So does anyone can tell me what is the cause of this problem and how to fix this?
By the way here's my laptop specs and speaker model:

Laptop:
lenovo g50-70
intel i7-4510u
4gb ram
win 8.1-win 10
built in speakers dolby home theater(conexant smart audio)
1TB HDD

External Speakers:
creative t3300

 

[basroil]

Sounds like a driver issue. Some drivers support multiple outputs, some don't, you'll have to update your drivers and see if your device supports what you want to do with it.

 

[apnomid]

Sounds like a driver issue. Some drivers support multiple outputs, some don't, you'll have to update your drivers and see if your device supports what you want to do with it.

Well it said, the latest driver available is already installed T_T

 

[basroil]

Well it said, the latest driver available is already installed T_T

That's just a false positive, go to the dell website and download the drivers for your machine.