Just some thoughts.

1. That's a very narrow address range. Remember that the first and last addresses may be thought of, as the broadcast address for that subnet. So .2 to .5 could leave .3 and .4 as what's usable and assignable.

I'm not going to enter into any debate if that's right or wrong, but offer this in light of my experiences. Expand that to .2 to at least .10

2. Leave the wireless client to DHCP as that is proper. Try this in a command window...

IPCONFIG /RELEASE

then

IPCONFIG /RENEW

Bob