If you are using a hard-wired connection it should not be intermittant. If it is, contact your provider. If you are using a wireless router, such as 2-Wire, it is very sensitive to static charge.
I had to change from 2-wire to Linksys wireless-G router because of the static load that would cut the 2-Wire every 10-15 minutes. It was maddening...pages would go dead in the middle of edits, etc. But I was happy with the service of the ISP, SBC internet. I tried using my old 2-wire modem with a new Linksys router and SHAZZAM!
Since I changed to a wireless Linksys I have had no problems at all. I couldn't tell from your question the true nature of your problem.
There no way you can stop ROBLOX losing connection to your computer FOREVER.
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Either 1, your network is losing its connection or not working right. Or you are playing a game which has a bad connection which keeps kicking you out of game lobbies.
I use 4xWatch which is a metatrader connection monitoring tool that performs several connection diagnostics and monitors you connection and your broker's 24/7. Its been very helpful for me in troubleshooting connection issues. Its available at: Link
A leak, a poor connection or it is burning it.
Your internet connection may be poor or that the firewall on your computer is restricting Roblox's access to the internet.
Most likely your alternator is not working properly.
have you ever checked if you switched on the connection switch? maybe the connection was off. maybe the connection was broke off.
you may be losing connection- I'm assuming you are on wireless. try to set your preferred band. Need more into to answer....
Try Changing the Batteries!
When a Hyundai is losing compression in its engine the car will not run properly. Symptoms of low compression are misfires, stalls, and overheating.
If it is staying connected to the internet and your computer is loosing connection it sounds like the computer has an issue or if your ussing one it could be your router. be more detailed about what you have.