topic Re: Error 721 remote computer not responding errors PCGX 705 in PCs & Accessories

Error 721 remote computer not responding errors PCGX 705

victwenty — Thu, 30 Jun 2005 00:10:41 GMT

Hello - I have two computers. A desktop with a PCI modem, WIndows XP Service Pack II - it connects to my iSP - Free-Online fine.
I have a PCGX 705 laptop (XP serv pack 2 etc) (USB modem) which was working fine until about 3 weeks ago when I suddenly started getting Error: 721 - remote computer not responding errors.
I re-installed the drivers to the modem, still the same error. I even bought ANOTHER USB modem to check - but still the same problem. I tried various sockets, filters but still the same problem! The BT_Test doesn't connect either - same error message.
I have gone into DOS and re-intalled the TCP/IP DUNS as per the microsoft web site but still no joy.
The Sony lap top has Spy Bot and Adaware SE - all regularly checked.
Only firewall is the XP one. Disabled that - still same problem.
Preferred device is the usb modem !
Also - made sure the lap top has EXACTLy the same dial up settings etc as the desk top!

Have you any ideas of what to do?? My ISP has said (not unreasonably) that it is a problem with the laptop as my desktop is working fine. Is this a BIOS problem or USB problem? Has there been a BIOS release in the past few months? The dial up modem works OK by the way.

Thanks!

Re: Error 721 remote computer not responding errors PCGX 705

tonybeard — Thu, 30 Jun 2005 00:33:29 GMT

Try TuneUp utilities trial it is a good diagnostic. Go to system and check tthat there are no exclamation marks next to the relevent drivers http://www.tune-up.com

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Thu, 30 Jun 2005 00:38:01 GMT

Cheers Tony - will give it a go
Watch this space

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Thu, 30 Jun 2005 09:47:52 GMT

Nice util - but alas still getting 721 and unable to connect.
No exlamation marks next to drivers either.
I have tried searching on the net for people with similar problem - ISP's just advise setting up new connection via Network Connections, re-installing drivers etc. None of these things have worked for me 😞
What on earth can it be?
I have thought about re-installing XP but that would take it back to the original version minus all the hundreds of updates - and what if it STILL doesn't do the trick??!

Re: Error 721 remote computer not responding errors PCGX 705

GBS — Thu, 30 Jun 2005 09:55:48 GMT

Have you tried these options.

Error 721 solutions - Intel.

Failing that Google "Error 721 remote computer not responding errors" and you will get a list of other solutions.

Good luck, I hope you get it sorted soon

Re: Error 721 remote computer not responding errors PCGX 705

kee-lo_ — Thu, 30 Jun 2005 15:48:09 GMT

I think going into device manager and checking for yellow exclaimation marks might help.

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Sat, 02 Jul 2005 13:34:12 GMT

Hi there - thanks for your suggestions.
Still no joy... no exclamation marks anywhere. By process of elimination it must be either a problem with XP or perhaps a USB issue? The modems work ok with my desktop.
Will try the Intel link above but I have kind of tried this work around already. SO frustrating. It just suddenly stopped working one day!
IF i do an XP re-install then it will go back to XP from years ago when I got my laptop - any ideas of how to install it with SP2 etc?
thanks!

Re: Error 721 remote computer not responding errors PCGX 705

kee-lo_ — Sun, 03 Jul 2005 19:34:49 GMT

Vic

Try uninstalling the USB hub in Device Manager and restarting your VAIO

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Mon, 04 Jul 2005 18:00:25 GMT

ok - have the lap top in front of me now
There are TWO..

USB Root Hub
USB Root Hub
VIA Rev 5 or later USB Universal Host Controller
VIA Rev 5 or later USB Universal Host Controller

I shall try it on both

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Mon, 04 Jul 2005 18:36:04 GMT

Just tried and still no joy... ARGH !
I have even tried connecting it through the same filter/socket where my desk top is = still error 721

I can only think of wiping the machine and starting again. The foot through the screen if that doesn't work though. There *must* be a work around without having to start again surely?

Re: Error 721 remote computer not responding errors PCGX 705

kee-lo_ — Mon, 04 Jul 2005 19:10:57 GMT

What type of USB DSL modem is it?

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Mon, 04 Jul 2005 20:13:42 GMT

ZOOM 5510
It can't be a modem problem though as I got a second hand Alcatel which still produced 721 messages...
sigh.. - am now trying this..
http://www.xp-smoker.com/freeware.html

wish me luck!

Re: Error 721 remote computer not responding errors PCGX 705

GBS — Mon, 04 Jul 2005 21:27:30 GMT

Good Luck!!!
That looks like a "f**k or fix" tool!!!:smileysad:

Re: Error 721 remote computer not responding errors PCGX 705

kee-lo_ — Mon, 04 Jul 2005 21:37:51 GMT

Yeah it's a dodgy tool if you don't know what you're doing, please do a system restore point before doing it

Go to Start > All Programs > Accessories > System Restore > Make point enter a name and click finish

Done

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Tue, 05 Jul 2005 08:36:40 GMT

Crazily and amazingly last night , I went to Properties, Networking and un-installed everthing on the list there save for INternet Protocol. I then re-installed the packet scheduler, Client for Microsoft networks etc. Tried to connect and it WORKED !
I couldnt believe my eyes! Rejoice!
THEN, Tragically, I tried re-connecting later and got 721 again..and this morning - same old problem.
I potentially might cry if I have to do a complete wipe, re=install XP, then SP 2 on top of that and STILL get this effing error !

I have the Sony disks that came with the lap top here now. I have downloaded the SP2 update from Microsoft.

Is there any particular way I should attempt a re-install with the Sony disks?
From what I can remember you have to go into DOS and type "format c:" My disk was partioned though so I have a 'd' drive. Should I format d: to and erase everything there?

I imagine it is a case of doing that and putting in the Sonydisks? (there are 4 of them!) argh!

IF there's any web link I need to do this Sony specific, your direction would be appreciated!

Thanks for all your advice!

Re: Error 721 remote computer not responding errors PCGX 705

kee-lo_ — Tue, 05 Jul 2005 15:25:00 GMT

Hi Vic,

All you need to do is put disk one in the DVD drive and reboot the VAIO, that starts the recovery process.

Obviosuly a Windows Networking issue then, Check that within the properties of the connection you get Windows to pickup automatically the DNS and IP rather than setting it yourself.

Re: Error 721 remote computer not responding errors PCGX 705

victwenty — Sun, 10 Jul 2005 00:55:28 GMT

OK .. So I re-installed it all from scratch... installed the modem drivers....hit the connect button.... 721 error !!
FTLOG !
About to throw the thing against the wall, I thought I'd try changing the "encapsulation" settings on the modem (no idea what this means) . I tried LLC, NUL and finally RFC 2516 PPPOE Encapsulation. The latter I hit the connect button and it says dialing 0,38 and waits...and waits...about 40 seconds it then verifies user name and password and connects (sometimes). I've NO IDEA what is happening. I just now tried connecting and it waiting about a minute and nothing seemed to be happening, tried again, nothing, so in the end shut down the lap top and started it up again. This time about a 30 second wait then it connected. SO - I am here on my laptop on line ADSL - good! , but still bemused why this has happened and why my desktop connects instantly - none of this long delay.

Re: Error 721 remote computer not responding errors PCGX 705

kee-lo_ — Sun, 10 Jul 2005 21:18:19 GMT

I would ask your ISP whats the best settings for this modem