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szlicar
03.09.2011, 00:48
Hello, i need some help...

I have about 2 years old Toshiba laptop, Satellite A300.

About week ago, i started to have problems with interrupted wireless connection. Wireless network sometimes worked, sometimes not. I assumed, the problem is OS (Windows 7), so i reinstalled it.
In addition, I installed Ubuntu on another partition (Dual boot).

After clean install, I noticed, that wireless adapter (Intel Wi-Fi 5100) sometimes just doesn't appear in Device Manager. So it's not recognized as part of hardware. The problem is in both OS's.

I think that problem is in some connection between mainboard and wi-fi card or maybe on switch (for turn wireless On - Off), but I have no idea how can access it or find broken wire or connection.

If I turn laptop over, unscrew some screws at the bottom, and screw it back, adapter sometimes appeared, but if I then move laptop, it disappear again.

Does anyone have any idea where this weak point could be?

Thanks for any answer

MisterX
03.09.2011, 11:13
> After clean install, I noticed, that wireless adapter (Intel Wi-Fi 5100) sometimes just doesn't appear in Device Manager. So it's not recognized as part of hardware. The problem is in both OS's.

Did you notice a unknown device in device manager under the Network Adapters?
Usually the Wlan card should be listed either as Ethernet controller or Unknown device if the Wlan driver would not be installed properly.

Possibly there is something wrong with the WLan connection to motherboard.
This is not impossible.
As far as I know the Wlan card is placed under the keyboard.

<img src='http://img690.imageshack.us/img690/608/disassemblyprocess17.jpg' width='550px'>

But note; everything what you do is your own risk! You could damage other parts if you would try to disasemble the notebook. So be carefull ;)

szlicar
03.09.2011, 16:05
thanks for answer, MisterX

> Did you notice a unknown device in device manager under the Network Adapters?
> Usually the Wlan card should be listed either as Ethernet controller or Unknown device if the Wlan driver would not be installed properly.

There is no unknown devices, it just not appear in device manager. It's not recognized even in BIOS, becouse one of actions (don't remember which one) about wireless adapter is not editable. So, all chances are about connection between HW.

Thanks for picture, I'll try to disassemble laptop in few days, and after that I'll report my experience.

> But note; everything what you do is your own risk! You could damage other parts if you would try to disasemble the notebook. So be carefull ;)

Thanks for advice..I'll be careful, I'll use some lessons on YouTube and web.

szlicar
11.09.2011, 13:19
Hello again,

I just disassemble keyboard and move cables on marked areas I access. Wireless adapter works fine up to now. But I have another problems, which was even before I started this topic.

One problem is that left speaker won't work. Sometimes it work, suddenly it stops. After few time it works again. And another problem is something about USB chipset. When I move laptop lid, it tells me "This device can perform faster..", like it shows on older computers without USB 2.0 support. When I click on message, it opens me this window:

[http://www.shrani.si/f/1X/EQ/dKvpJP5/message.png]

Thanks for help

PauPau
11.09.2011, 16:26
>One problem is that left speaker won't work. Sometimes it work, suddenly it stops. After few time it works again.

There could be a hardware issue with the onboard speakers.
Maybe there is a loose connection. This could be possible because you have moved the cables as you have suggested above… this could affect the speaker functionality.

> And another problem is something about USB chipset. When I move laptop lid, it tells me "This device can perform faster…
Try to update or to install new chipset driver. As far as I know you can get the latest drivers from Intel page directly.