Unidentified Network Problem

Alright i'm about to rip my hair out with this one.

I just got a linksys E3000 (wireless-n, sim dual band 2.4 and 5.0GHz, gigabit ethernet) router that replaced my not so old linksys WRT300N (wireless-n, 2.4 band, fast ethernet) router. Now I manually configured it since i don't want to use WiFi Protected access/setup. So i set all the settings to match my old router and my laptop (asus g37jw), netbook (asus eee pc seashell series), dad's toshiba laptop and all hardline devices work without a problem. However whenever my mom or sister's laptops (hp pavillion dv6700 entertainment pc) try to connect they get unidentified network error. They connect to it without a problem (usually) and have excellent strength but limited to no connectivity. So i did a firmware upgrade on the router, driver update on the hp (was up to date), and a reset the computer and router, no luck. Next i looked up the ipconfig /all and compared it to a working pc and they matched (aside from different ip's of course) and nothing looks wrong. I pinged the router with the hp and it came back Destination Host is Unreachable or request timed out. Setting a static did not help. The only fix that actually worked was telling the router to use wireless-g only and without security on the 2.4GHz band broadcasting at 20MHz only on channel 6. But this is stupid because most machines nowadays still can only pick up the 2.4Ghz band and that's a huge downgrade from my last router which did 2.4Ghz wifi-n and wpa-2 aes with no problems. The wifi card in the hp is Atheros AR5007 wifi b/g. Which i feel is the problem since all other devices work fine on the 2.4Ghz and the 5.0Ghz (mainly my laptop which is the only one that can see the 5.0Ghz) band. Idk what to do at this point... any ideas?

Sounds to me like the DHCP settings are causing the wired connection to bomb out, which shouldn't happen really, the DHCP server should only allow a certain range of IP addresses, eg/ 192.168.0.1 - 192.168.0.5, or more if you have set it like that, unless you are using manual IP addresses then this is all irrelevant, have you tried expanding the address range or enabling DHCP on the the router if you haven't done so already?

Dave

Hi Spikeguy4.

Could you please follow the procedures in the following post on the PC that isn't working right: http://www.vistax64.com/network-sharing/284688-network-posting-tips.html and then post the screenshot(s) in your next reply? The first may help identify the problem (even if it seems to be identical to those that are working fine - I'd like to see, for example, how much the IP addresses differ and how the general setup is configured) and the last may help resolve the problem if any of the resets are the cause.

I hope this helps. If not, we'll try some other options to see if we can identify the problem. There must be SOMETHING different about this computer - though it's hard to tell yet. In the meantime, I'll look up what I can find on that wireless card and those computers (and the routers) to see if I see anything there to indicate why it might be a problem.

Good luck!

Alright. First i'm very sorry for the long response time. But lets get back down to business. I appericate all the responses and the help thus far.

So I flushed the dns, relesed the ip, and deleted all saved wifi networks, restarted and tried again with no luck, same problem. Ill post a .zip file the contains two folders. The problem computer computer is, of course, the hp and I have a file in there showing how it can connect to our old router (babinchakbronze) WRT300N (a wireless n WPA-2 AES network) then the ipconfig of the new router and how it fails. Under working computer is my netbook's ipconfig which can connect fine. I hope this helps!

All the tunnels on my netbook are for hamatchi an ftp type server, just to let you guys know. If u have any other questions please let me know! Thanks!