Same here. Dell Inspiron 6400 with Vista Home premium 32 bit and Netgear router. Everything worked perfectly for 8 months, now since last week constant drops and limited connectivity. Disconnects every 5 mins, moreso during heavy bandwidth use.

Pain in the arse.

Any ideas?

Anti-Virus and Spyware scans may help. Re-install network drivers could also. If all fails contact your ISP.

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AMD X2 6400+ 3.2GHz BLACK EDITION::SCYTHE SAMURAI COOLER::GA-M51 M/B::3GB DDR2 6400RAM::GEFORCE 8800GTS320/625/900MHz DRIVER '174.74' BETA::160 RAID 0 SATA2::SOUND BLASTER AUDIGY/'DANIELS' DRIVERS::LITE-ON DVD RW/PIONEER DVD::HIPER 530W MODULAR::THERMALTAKE ARMOUR Jr CASE::RAZER COPPERHEAD MOUSE::VISTA HOME PREMIUM SP1

Purchased HP Slimline Vista Home with Intel USB Wireless 802.11 b/g adaptorabout a year ago. Connected wirelessly to a NetGear WGR614 v6 router. This worked fine for about 10 months, no problems whatsoever, but recently the connection would just die and come back a while later for no reason. I reset the router and re-setup wireless on my laptop (XP)and desktop (Vista). Now it gives me a limited or no connectivity error! It seems to me all this started occurring after a vista update, as there was a wireless option on the control panel that is now gone, I had previously used this to successfully set-up my wireless connection. I thought maybe it was interference, so I brought my laptop upstairs next to my desktop and it works just fine. I don't know what the damn problem is and it is pissing me off, Vista sucks! I am going to try uninstalling the wireless connection and updating the router and wireless adapter, we'll see where it gets me. Any help is appreciated. I can't even get online, I'll just use my USB drive, sheesh!

At least I amnot alone!
Bought Dell Inspiron 530 for my son for Xmas. PC is fine but will not connect to internet via wireless. Connects as it should but shows 'limited connectivity' so no access to internet. Works fine with ethernet cable to router. I have three other PC's all connected wirelessly but all running Windows XP.

I have replaced the wireless card, hooked up another router as well, no different. Spent two hours on phone with Dell technician, ended up restoring system to 'factory image' as suggested by Dell, lost all the loaded files etc. but just the same. Vista is a joke and wish I had now specified XP when I bought it!

i have a WIRELESS 6520 - TELSTRA 6978

Generally when vista updrades a few programs DROP OUT inc Internet connection.
Problem is with VISTA, as another computer with XP is ok.

Solution

Switch modem on/off

Delete Wireless connection
reboot
ADD new wireless connection..

Works %50 of the time

nathan

I also had this issue once after updates, however now all is well.
The first action to take when this happens is to make sure that all drivers are up to date, and that you have reset your router. Most routers have a reset button which is activated by the use of a paper clip. insert end of paper clip through hole and hold it on untill all lights flash then release it. Power off the router Modem then power on wait till all lights are working then try again.

In the very begining Vista did have some problems with compatibility and wireless, however it has been my experience that there have been no issues since using a compatible wireless card. It appears that Vista is for the next generation Wireless A.G.N. and with this all works very well. admittedly there are some issues, however this is not to do with Vista, it is with the third party component people where their hardware is not compatible, therefore beware choose all components carefully and there should be no issues.

I had this problem over this past week+, read lots of posts on lots of boards like this, tried lots of proposed solutions, updated drivers, firmware, a Microsoft Hotfix that sounded like just the ticket (but it didn't work), tried some workarounds, etc., and eventually came across this, which was the solution for me:

Windows Vista cannot obtain an IP address from certain routers or from certain non-Microsoft DHCP servers

I did the fix under Resolution, and not the additional one under More Information.

I have a Lenovo ThinkPad T61 with Intel network adapters.

Everything seems to be working smoothly now.