Based on my experience (working for an ISP) if you can connect at all it's unlikely to be software related and is actually more likely to be one of a couple of things;
1. Your laptop is losing the signal and that's causing it to drop. You can verify whether this is the cause by checking the signal strength.
2. Your connection is unstable and is causing it to drop. It's worth checking with your ISP to make sure that your connection is 100% stable.
The other possibility is that your wireless card just isn't up to much, and it might be worth investing in a new wireless n dongle. They're relatively inexpensive and would also help with issue 1 above, but I'd rule out 2 before going down that route.
All the best
Stephen
1. Your laptop is losing the signal and that's causing it to drop. You can verify whether this is the cause by checking the signal strength.
2. Your connection is unstable and is causing it to drop. It's worth checking with your ISP to make sure that your connection is 100% stable.
The other possibility is that your wireless card just isn't up to much, and it might be worth investing in a new wireless n dongle. They're relatively inexpensive and would also help with issue 1 above, but I'd rule out 2 before going down that route.
All the best
Stephen