New Dell Mini 10 Randomly Dropping Connection?

Hi all! I just got a brand new Dell Mini 10 yesterday and out of the box it connected fine to my wireless network that's been up and running fine without one single hiccup since I set it up almost a year ago. Several hours of surfing later my mini said it wasn't connected anymore. It also said no wireless networks were in range. My other laptop was still connected to the wireless network fine so I know its not that. It was late at night so I went to bed. I left the laptop on and charging overnight because the booklet said to let it charge for 12 hours the first time you turn it on. I got up and the network was still missing. I checked my email on my other computer and was about to call Dell support when suddenly the connection was there! I went to work and took my laptop to a wifi hot spot during lunch and had no problems while there. I got home tonight and my wifi signal is missing again! So I finally call Dell Support and they have me change the channel my router is broadcasting on. This immediatly fixed it. Then I downloaded Internet Explorer 7 and had to reboot. Once again the signal was gone. I rebooted again and it was back. I'm going a bit crazy here. What could the issue be? Thank you in advance for anyone who replies.

The only thing that pops into mind right away is to go into your windows system settings to device manager, find the network adapter for your wireless, and make sure under all the settings and tabs that it doesn't have a check somewhere like 'allow windows to turn off this device to save power'.

Also, not sure about the HP, but my acer has a hardware switch on the front that if bumped well enough, disables the wifi card (it's what it's there for, just not obvious when you get the thing).
Finally, it 'could' be that your adapter doesn't play well with your router. Make sure you have the latest drivers loaded for it.

I will check what settings are in the device manager. My laptop actually doesn't have a manual on/off wireless switch. You have to enable/disable it in the start menu. So far last night and today the signal has been steady. Perhaps it was just a minor glitch? I will do as you suggested with the device manager though. It makes sense that something like that could cause the signal to drop. Thanks a lot for taking the time to answer me!