cannot get a dynamic addres from DHCP ...

25 Oct 2006 7:06 PM

Paul (Bornival)

Hi,

I have a problem that affects a *few* machines (one Toshiba laptop and one
desktop, but all the other machines I supervise (30 !) are fine.

These two machines are unable to get an IP address frol the DHCP server
(which runs normally and gives addresses to all other machines; there is no
restriction about MAC adressses etc... on the network... and all firewalls
have been disabled but to no avail).

Both machines can access the network and INTERNET if I manually give them a
fixed IP address.

An additional "symptom" is that when chnaging from a fixed to an dynamic
address, I 'am prompted to restart the computer (as in tne old good times of
Win98...). Restarting will not solve the problem (if the TCI/IP properties
are set to "obtain a dynamic address", it will *not* be obtained and no
connection wil be available; if the TCP/IP properties are set to a fixed IP
address, veryting is fine...).

Has anyone a suggestion as how to "repair" this part of the TCP/IP software
without having to fully resintall Windows ?

Any help will be appreciated.

Paul.

25 Oct 2006 9:47 PM

Richard G. Harper

I would scan these two systems for adware, spyware, viruses, etc. and would
humbly suggest a process something like:

http://rgharper.mvps.org/cleanit.htm

--
Richard G. Harper [MVP Shell/User] rghar***@gmail.com
* PLEASE post all messages and replies in the newsgroups
* for the benefit of all. Private mail is usually not replied to.
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Show quoteHide quote

"Paul (Bornival)" <PaulBorni***@discussions.microsoft.com> wrote in message
news:76BFB565-BEA7-4CA2-A636-A18B9ABA2117@microsoft.com...
> Hi,
>
> I have a problem that affects a *few* machines (one Toshiba laptop and one
> desktop, but all the other machines I supervise (30 !) are fine.
>
> These two machines are unable to get an IP address frol the DHCP server
> (which runs normally and gives addresses to all other machines; there is
> no
> restriction about MAC adressses etc... on the network... and all firewalls
> have been disabled but to no avail).
>
> Both machines can access the network and INTERNET if I manually give them
> a
> fixed IP address.
>
> An additional "symptom" is that when chnaging from a fixed to an dynamic
> address, I 'am prompted to restart the computer (as in tne old good times
> of
> Win98...). Restarting will not solve the problem (if the TCI/IP
> properties
> are set to "obtain a dynamic address", it will *not* be obtained and no
> connection wil be available; if the TCP/IP properties are set to a fixed
> IP
> address, veryting is fine...).
>
> Has anyone a suggestion as how to "repair" this part of the TCP/IP
> software
> without having to fully resintall Windows ?
>
> Any help will be appreciated.
>
> Paul.