Keep getting 'No network access'

VoucherMan

I turn my laptop on & off(hibernate) 5 or 6 times a day so only an intermittent problem, but it seems to be happening almost daily.

When I turn on the laptop the network icon shows a problem.

My current solution is to open the Network and Sharing Centre, followed by Wireless Network Connection & then click the Diagnose button.

It then proceeds to Reset the wireless connection adaptor with a message that the "Wireless Network Connection"doesn't have a valid IP configuration (Fixed)

After this everything works fine.

I tried having a look at the View detailed information but it doesn't help me at all especially the final line - Result of diagnosis: There may be problem


Any suggestions on how to cure this so I don't have to keep resetting? I'm guessing it's something I've done that's caused it. I've tried using System Restore to see if that helped but it's no better.

Figment

Just to clarify, are you saying this problem happens EVERY time you wake the laptop from hibernation, or only sometimes?

Does the same thing happen if the laptop is switched on after having been shutdown completely?

Do you have to repair the connection manually, or if left, does it restore the connection eventually without your intervention?

Which version of Windows?

Is your wireless adapter set to get an IP address automatically (via DHCP) or using a fixed IP address?

LincolnshireYokel

Some network cards dont like hibernating. They stop sending wake up signals and basically disconnect and turn off.

More information, what laptop make/model , what o/s is it ? Doies Device Manager tell you anything about the network card ?

And as Figment says, it might be losing its IP as a result.

Next time it goes to sleep go to a Command prompt (assuming you can) and do IPCONFIG

VoucherMan

Figment wrote: »

Just to clarify, are you saying this problem happens EVERY time you wake the laptop from hibernation, or only sometimes?
Sometimes. Until today it had never happened more than once in a day & as I usually turn the laptop off when not in use I may resume/hibernate it 5 or 6 times a day

Does the same thing happen if the laptop is switched on after having been shutdown completely?
I restarted the laptop after this latest failure & it connected fine. I think the last time I tried it didn't work & I still had to fix it via the 'Diagnose', though I can't be certain of this.

Do you have to repair the connection manually, or if left, does it restore the connection eventually without your intervention?
Usually the network icon is showing a good connection as soon as the login screen clears. If not it's within a couple of seconds. If it's not connected by then it's never connected after. I've not left it for more than a couple of minutes before going to the settings page to restart though.

Which version of Windows? Windows 7 Home Premium

Is your wireless adapter set to get an IP address automatically (via DHCP) or using a fixed IP address?
IP address is on automatic setting. DNS is set to Google's 8888 & 8844 though

LincolnshireYokel

I've had laptop set to hibernate since shortly after I got it (about 18 months ago) so can hopefully rule that out.

At the moment Device manager reports -This device is working properly.

make/model Lenovo G550

I tried using the Command prompt once before. I found a similar question to mine somewhere & one of the replies was to type in ipconfig /renew. I don't remember if it worked or not, but it's certainly not cured the problem long term.

Figment

Next time it has no network access and BEFORE manually fixing it, open a command prompt and type ipconfig /all (single space after the g). Find the block of info relating to the Wireless LAN card. Post what is showing against:

IPv4 Address. . . . . . . . . . . :
Subnet Mask . . . . . . . . . . . :
Default Gateway . . . . . . . . . :

then type each of lines one at a time, pressing the Enter key after each
ipconfig /release
ipconfig /renew
ipconfig /all

Find that block of data relating to the Wireless LAN card again, and compare the info with that recorded above.

Does doing this restore your connection?

Finally, type exit and press Enter to close the command window.

VoucherMan

Thanks.

I've made a note. Just need to remember to do it if/when it next happens.

VoucherMan

Figment wrote: »

Next time it has no network access and BEFORE manually fixing it, open a command prompt and type ipconfig /all (single space after the g). Find the block of info relating to the Wireless LAN card. Post what is showing against:

IPv4 Address. . . . . . . . . . . :
Subnet Mask . . . . . . . . . . . :
Default Gateway . . . . . . . . . :

A few days and even more failed connections later.

When first run most of the headings are not even listed -

Link-local IPv6 Address . . . . . : fe80::647b:c7e4:4ace:d356%11(Preferred)
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 301999746

compared to when the machine is running normally -

Link-local IPv6 Address . . . . . : fe80::647b:c7e4:4ace:d356%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.5(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 02 June 2012 22:24:10
Lease Expires . . . . . . . . . . : 03 June 2012 22:24:10
Default Gateway . . . . . . . . . : 192.168.1.1


ipconfig /release returned


Windows IP Configuration

No operation can be performed on Wireless Network Connection 3 while it has its media disconnected.
No operation can be performed on Bluetooth Network Connection while it has its media disconnected.
An error occurred while releasing interface Wireless Network Connection : The parameter is incorrect.


ipconfig /all started with a similar message.
Still didn't restore connection though.

I've tried a few different options after this to see if it helps - the simplest being to click on the problem icon.



Next time I tried a restart. Even a system restore to the earliest available date (about 3 weeks ago)


Any other suggestions (other than live with it?)

Figment

Although probably unrelated, it appears you have multiple wireless network adapters configured, whereas (presumably) you only have one physical wireless adapter.

No operation can be performed on Wireless Network Connection 3 while it has its media disconnected.

An error occurred while releasing interface Wireless Network Connection : The parameter is incorrect.

I would delete all of the wireless networks apart from the active one from the Network and Sharing Center.

I would also be inclined to reset the laptop's DNS settings to automatic, and put Google's nameserver IPs into the router instead.

VoucherMan

Figment wrote: »

I would delete all of the wireless networks apart from the active one from the Network and Sharing Center.

I would also be inclined to reset the laptop's DNS settings to automatic, and put Google's nameserver IPs into the router instead.

Thanks.

Done all that.

Just have to see if that's fixed it.

esuhl

I had loads of problems maintaining a (wired) network connection in Windows 7. I happened to mention this to my ISP who explained that there was a "known bug" in the OS that sometimes means that the PC fails to obtain an IP address through DHCP (even though the DHCP server is working correctly).

Despite my suspicions that they were making it up(!), I set the router to always assign a particular IP address to the Windows 7 PC, and on that PC manually specified the same IP address (rather than using DHCP) and it resolved the problem...

If this happens only after the PC has "woken" from suspend/hibernate, then maybe the network adapter isn't re-initialising properly... I think there might be a few options to look at in the Device Manager... And are there any BIOS setting that controls how the PC suspends/hibernates and wakes/initialises devices like the network card?

Figment

I always decrease the range of IP addresses available to the DHCP pool, then set static IP addresses on any non-portable devices.