Toshiba satellite notebook l355-s7907 ユーザーズマニュアル

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If Something Goes Wrong
Resolving a hardware conflict
3
At the top-left of the Start menu, click 
cmd.exe
 to open the 
command prompt.
4
Enter 
IPCONFIG /ALL
 and press 
Enter
.
The IP address for each active network adapter will be 
displayed.
Connect your computer directly to your router or broadband 
modem, by plugging a standard CAT5 Ethernet patch cable 
(sold separately) into your computer's RJ45 Ethernet port. If 
your connection problem disappears, the problem lies in the 
Wi-Fi
®
 part of your network.
Use the PING command to verify a connection to the gateway 
at 192.168.1.1 (a default gateway for most wireless routers).
1
Click Start to open the Start menu.
2
Type 
Cmd
 in the search field.
3
At the top-left of the Start menu, click 
cmd.exe
.
4
Enter 
PING 192.168.1.1
 at the command prompt, and press 
Enter
.
5
If “Request Timed Out” or another error message appears 
in response, then the problem is probably Wi-Fi
®
-related.
If you have enabled any security provisions (closed system, 
MAC address filtering, Wired Equivalent Privacy [WEP], etc.), 
check the access point vendor's Web site for recent firmware 
upgrades. Problems with WEP keys, in particular, are 
frequently addressed in new firmware releases.
The Windows
®
 operating system wireless management 
facility does not work.
If you are using an external Wi-Fi
®
 adapter (an ExpressCard
®
, USB 
adapter, or other variety), check if the adapter comes with its own 
management utility. If it does, the utility may be disabling the 
Windows
®
 operating system wireless management facility, in which 
case you must use the adapter's management utility. If the 
documentation that accompanies the adapter does not provide 
enough information to determine if this is the case, contact that 
vendor's support group for further advice.