Works for a few minutes then quits

I've installed Windows 7 Ultimate on my 532h and am having troubles with the wifi. I installed the drivers from Acer's website but they aren't working correctly. After they were installed the wireless didn't detect any networks but after getting mad and closing it and opening it back up again the wifi connected to my network and worked for a few minutes then disconnected from my network, but still showed all the networks in the area then a few seconds later it all vanished and no networks showed up.