Greetings to the forum.
I'm having a bit of a trouble trying to solve a network problem in my brother's laptop. It's a Toshiba Satellite L500 running Windows 7 HP SP1 32-bits.
To make a long story short:
He uses a mobile broadband connect pen, Huawei E392, which has previously always worked flawlessly in this laptop, however, now, a couple of software installs, uninstalls and reinstalls, both for this connect pen and another one, in case Huawei E220, the two of which run on different software versions, plus a couple of system restores back and forth tried in the attempt to sort things out, the fact is that this connect pen, E392, the one that was last installed, it now no longer establishes connection to the internet.
In the Network and Sharing Center, it just stays as "Unidentified Network". If I run Windows Network Diagnostics, it comes up with the following: "The mobile broadband service isn't being executed.". And if I choose "Try to apply this correction as admin.", it every time just ends up saying "Not corrected.".
I've tested the pen in another computer, and it works ok there, so I'm assuming the problem's not there. Also, asking the ISP about it, they say they also don't detect any problem when testing it remotely.
Checking the IPv4 protocol properties for the connection, go figure why, it is wrongly set to use specific IP and DNS addresses, with the fields being empty. If changing both those settings to get the addresses automatically, then it does connect to the internet. However, it still stays as "Unidentified Network", and more, the network icon in the task bar just keeps the same red cross over it as if there was no connection to the internet, even though there is. Also, if now again running Windows Network Diagnostics, it does still return the same message, "The mobile broadband service isn't being executed.", although, if now choosing "Try to apply this correction as admin.", it does now result in "Corrected.". However, if running Windows Network Diagnostics again, it just says again "The mobile broadband service isn't being executed.".
Checking the settings in that other computer where I've tested the pen, it is set to get the IP and DNS addresses automatically, and also the ISP has confirmed that those are the settings by default and which should be set upon installation of the pen's software. However, for some reason, those settings are failing to be set in this laptop. Furthermore, and again go figure why, they're even failing to be "saved/stored", since, as I was saying above, if I change those settings manually to get the addresses automatically, ok the connection to the internet is established, but then, after removing the pen, the next time it is plugged back on, the settings are simply lost, and it just gets set back to use specific IP and DNS addresses, with the fields being empty. And yes, running Windows Network Diagnostics, the resulting message is the same as everytime: "The mobile broadband service isn't being executed.".
I'm at a loss. Any idea why things are acting up this way, and especially, what causes such message to be returned again and again by Windows Network Diagnostics, that "The mobile broadband service isn't being executed."? What does such message mean? I can't seem to find any info on the issue googling for it?
If anyone can give a hand at trying to sort this out, any hint, anything, I'd be most appreciated.
Thank you greatly in advance for your time and possible help.
P.S. The laptop has been scanned for malware (Avast AV + MBAM + SAS + TDSS Killer) and no threat was found.
Edited by DeLuk, 09 March 2014 - 07:03 PM.