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zzaxx99 - 24 Jun 2009 10:20 - 8163 of 8276
Anyone have any bright ideas how I can tell whether my router's WiFi is dying or whether I'm suffering from interference from the (large number of) neighbours with WiFi?

symptoms are that I cna usually see a high-strength signal from the router, but can't connect (doesn't authenticate). This has happened over the last couple of days.

Scanning the area shows up to 10 visible WiFi networks at any one time.

I've just found out the cause, and thought I'd share it in case anyone else gets similar.

To recap - my config is a Virgin cable modem, with a WiFi router/gigabit switch attached; the router is configured as a DHCP server, allocating addresses in the 192.168.x.x range

Wired connections have been working fine, but wireless either wouldn't connect at all, or would connect very unreliably.

I've been puzzling over this for weeks, but finally got the clue to the problem when I saw that my laptop eventually connected, but was allocated and address outside the non-routing 192.168 range, which meant that it was getting a routable address from somewhere beyond the router - probably the modem.

Rebooted the model, then the router, and suddenly wireless is working perfectly

zz: not sure how your wireless laptop would get an IP address from anywhere other than the WiFi router -- surely more likely it was attaching to a neighbour's WiFi router? Or have I misunderstood?

The laptop was probably giving itself an address beginning 169.x.x.x, which is what Windows does when it can't find a working DHCP server. Rebooting everything fixed whatever was stopping communication between the laptop and the router.

If there is any doubt as to where the IP address is being obtained from, you can verify this by 'ipconfig /all'.

Hi guys.
I accidently shut my Win XP pc
down in sleep mode...

It wont wake up...
fan comes on...then it stops

Tried..holding the power button in and pulling the plug out at the back
still no "energy" to get up and get going

any ideas?

Foale

Are you saying that it immediately shuts down before it starts to reload windows?

If that is the case, it sounds like a hardware fault. If it happened when it went into sleep mode then memory is the first thing to check but it could also be processor, motherboard or power supply.

Start by making sure the memory is seated properly, then if you have more than one memory chip try removing one then swapping them then swapping the slot. If that doesn't get it going, then try removing all cables and cards (including disc drives but not video card).

I have a wireless b/band thingy in the back of my newish computer. It appears to be working fine as it says it is connected and signal strength is full, however I don't have an internet connection unless I use an ethernet cable. My son thinks it is to do with the channel not being right, but on Windows Vista, he can't find out how to change the channel. Any ideas?
Thanks

I doubt that it is the channel at fault as you have a good connection. More likely, it is a DHCP problem.

To start with, right click the wireless network icon in the task tray and select Status. From there, you should be able to find the connection information. Post it here.

Thanks Optimist but it doesn't say Status when I right click.

Sorry about that, I've upgraded my Vista machines to Windows 7 so I was guessing from memory.

Try right click the network icon and select Network and sharing Centre or something like that. Then in the options on the left hand side, select Change adaptor settings. In the window that opens you should be able to right click the wireless adaptor and select Status.

Thr other way to get the info is to open a command prompt and run ipconfig /all

Opti

... and how are you liking Windows 7?

Even the RC version of Windows 7 is far better than Vista or XP ever were. It will be the most succeseful OS since the launch of Windows 95.

The only reservation that I have is that the RC is Windows 7 Ultimate, which is what I'll stick with. I'm not sure how good the Prof/Business version will be and I'm sure that, as with XP and Vista, the Home version will be a total waste of money.

sorry to be so thick, but I don't know which bits of info you want me to post, there seeems to be a huge amount

Here are the headings that you need to post relavent to the wireless connection:-

C:\>ipconfig /all

Ethernet adapter Wireless Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . :
DHCP Enabled. . . . . . . . . . . :
Autoconfiguration Enabled . . . . :
IPv4 Address. . . . . . . . . . . :
Subnet Mask . . . . . . . . . . . :
Lease Obtained. . . . . . . . . . :
Lease Expires . . . . . . . . . . :
Default Gateway . . . . . . . . . :
DHCP Server . . . . . . . . . . . :
DNS Servers . . . . . . . . . . . :
Primary WINS Server . . . . . . . :
Secondary WINS Server . . . . . . :
NetBIOS over Tcpip. . . . . . . . :

Connection-specific DNS Suffix . : it says nothing
Description . . . . . . . . . . . : Am1772(tm) Wireless LAN Chipset
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : it doesn't say this one
IPv4 Address. . . . . . . . . . . : 192.168.1.4
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 23July 2009 07.55.29
Lease Expires . . . . . . . . . . : 26 July 2009 07.55.28
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Primary WINS Server . . . . . . . : it says nothing
Secondary WINS Server . . . . . . : doesn't have this line
NetBIOS over Tcpip. . . . . . . . : Yes

That seems to be OK.

Unplug the network cable, open a command prompt and run ping 192.168.1.1

You should get something like

Reply from 192.168.1.1: bytes=32 time<1ms TTL=64

That will show that you are getting through to the router.

Next try ping moneyam.com.com

You should get something like
Pinging c18-ss-1-lb.cnet.com [216.239.122.33] with 32 bytes of data:
Reply from 216.239.122.33: bytes=32 time=141ms TTL=239

If you do then your WiFi connection should be working OK, which would point to a problem with the Internet Explorer connection.

Let us know how you get on.

right, that's done now, I got
Pinging moneyam.com 193.243.128.75
bytes=32 Time=32ms TTL=52

It has mysteriously started working having never worked before (????!!!!) so thanks very much Optimist, especially for being so prompt with your help :-)

My kids are converting some DVDs to itunes mp4 format using a download from tucows called cucusoft. Once it's been saved to the PC AVG checks it and say there are three trojan files called iTunesLocalised.dll, iTunes.dll and iTunesRegistry.dll.

It's saying they are a Trojan horse small.BOG.

I don't actually believe it, but would appreciate the opinion of someone who knows.

Look at this

http://discussions.apple.com/thread.jspa?threadID=2092831&start=105&tstart=0

It suggests that AVG is the problem.

Thanks Haystack. That's the sort of stuff I tried to find without success. AVG has done this to me with other stuff, so I've made iTunes an exception.