I have a netgear WGR614v7 router for my home network, and like the title says, (very nearly) every day when she comes home and turns on her laptop (windows 7), she has no internet. My desktop is connected via a cord, so I'm never offline and I can go into the router and see all the connected devices. Her laptop doesn't show up in that list.
I've tried reserving IPs by mac address for all devices that connect to prevent IP conflicts, but her laptop, even though I've set it to a static IP that matches the reserved address, never connects at that IP. Immediately when I first set up the ip reservation, she happened to be connected and when I ran ipconfig release/renew, it picked up the new IP address. But that only works if she's already connected, and just not on the right IP, and hasn't happened since. At one point I created a batch file that would run ipconfig release/renew, but since she isn't on the network at all, it doesn't do anything.
There are maybe 8 or so devices in my house. My computer and a chromecast are always on. My android phone is on when I'm at home, her phone and laptop are on when she's home. Occasionally there's a 3ds, android tablet, PSP, or my work laptop. All the various other devices seem to pick up their reserved IPs without issue.
My router has the latest firmware, every device which ever connects to the network has an IP reserved, but it seems like the laptops don't respect that setting. Is there anything I can try? As a last ditch effort, I'm thinking about picking up a new router to see if the issue goes away, but I'd rather exhaust all options that don't require money and me to return a purchase if they fail.