Windows XP-Cannot obtain IP address after spyware removal

I have a Linksys wireless router, and a desktop networked to it that has worked great for years.  I tried a new trial version of a spyware removal program (Aluria Spyware Eliminator).  It removed a copule things (I don't remember what), but I didn't like the program so I removed it.  Now, I cannot connect to my network.
The networ status just say's "Aquiring Network Address", and it never gets one.  It eventually assigns some random IP address.  Any thoughts what could be happening?  I have lost all network connectivity and can't get it back.  I have another computer on the network which works fine, so my router is unchanged.  The network uses DHCP, and NOTHING has changed since it worked 2 days ago...  Please help!  I'm desparate!  Thanks.

The network is:
Linksys Wireless Router BEFW11S4
Wireless Adapter: DLink DWL-650  Thinking maybe my wireless adapter was broken, I bought Linksys WUSB11, same problem with both.
BudALiteAsked:
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sunray_2003Connect With a Mentor Commented:
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gusdarinoCommented:
The problem is most likely a corrupt driver or tcp/ip stack.

Make sure you have the drivers for the NIC and your windows CD.
Uninstall the NIC drivers and remove all the network components.
Reboot your system and reinstall all of the above.  

If this does not work please specify the OS in use and what Service Packs you have installed.

Gus
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sunray_2003Commented:
How to reset Internet Protocol (TCP/IP) in Windows XP
http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q299357&

SR
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BudALiteAuthor Commented:
The Linksys network adapter I just purchased this morning hoping that would fix the problem.  So that is brand new installed today.  I even got on the phone with Linksys and they tried to help but couldn't, said something must be going on with my computer itself.  Any other thoughts?  I am using Windows XP SP2.  Firewall is off (interestingly, it won't even let me turn it on.  May just be because my connection isn't there).
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mikeleebrlaCommented:
what is the random IP address it assigns?  if it is between 196.254.0.0 and 169.254.255.254, then it is getting a APIPA address which means that it can't reach the DHCP server (your router in this case)   I would give the PC a static address of 196.168.1.111 (an address within the linksys DHCP scope) and then see if you can ping your router,,, your routers address is probably 196.168.1.1.
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BudALiteAuthor Commented:
SR-  I went to the command prompt and typed: netsh int ip reset c:\resetlog.txt
It say's 'netsh' is not recognizes as an internal or external command.  Am I doing something wrong?
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BudALiteAuthor Commented:
It assigned 169.254.177.252  For some reason command prompt won't recognize ping command either...
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gusdarinoCommented:
As you suspected, the SP2 Firewall is not on because you don't have network connectivity.  You need to make sure the network card drivers are installed properly.  If the NIC drivers are installed properly then you need to remove and reinstall the TCP/IP components.  You can use the information provided by sunray_2003 to do this if you don't know how.

Gus
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gusdarinoCommented:
If the ping command is not recognized then you may have a TCP/IP Stack issue as previously stated.  

Gus
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mikeleebrlaCommented:
what happends when you do ipconfig -all ?  if it tells you an IP address,,, that usually indicates that the TCP/IP stack is ok
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anil_uCommented:
A long shot, but I had this problem, seemed to be an issue with Mcaffee Security Center, in the end to resolve it,  had to uninstall this application.
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sunray_2003Commented:
BudALite,

Try to get that winsock tool using ne connection from a different machine and run it in the machine that has issues
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BudALiteAuthor Commented:
SR- Your http://www.spychecker.com/program/winsockxpfix.html did it!  Thank you!  Now however, the conection couldn't possible be any slower.  Any thoughts why?  It used to fly, but now although I have connection, it is dog slow!
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litomdCommented:
If you cannot change firewall setting then you could be loggin in with a non-Administrator user. Try starting windows in safe mode (pressing F8 when booting and chossing safe mode in the start menu), then go to control panel - network connections - your connection (the one with the linksys adapter). I would use a static address, to see what address you can use go to the other computer and in a command prompt type IPCONFIG and use the same parameters for all but the IP address which should change only in the las number (the last octect) add one there. For DNS servers type IPCONFIG /All and check. Restart the machine in normal mode and try again.
Finally, check the wireless configuration, check the channel being used if security is turned on, if network id is the same, etc., this is done different from vendor to vendor, but you should check for a wireless manager or similar program included with the software of the card.
Hope this helps.
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sunray_2003Commented:
BudALite,

regarding connection , it depends on your setup i mean router etc. Try a wired connection (connect ethernet cable from router to computer) and see if that would help in speed .

if you had installed windows xp SP2 lately , you are sure might have slow connection
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friekedCommented:
Wow, seems like tcp/ip isn't even there... try this:
To Reinstall TCP/IP do the following:

Navigate to: C:\windows\inf
Find the File: nettcpip.inf
Right click the file and choose install
With regard to the speed of the command, it is instantaneous, that is why it will almost seem like it did nothing at all
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BudALiteAuthor Commented:
What do you mean about the SP2 install?
This is terrible, about 2 mins to paint a page.
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sunray_2003Commented:
BudALite,

Did you install Service pack 2 in windows xp lately ? slow speed of internet could be because of that or if you have not installed then check wired connection from router and see what happens
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BudALiteAuthor Commented:
Seems like it snapped out of it.  Working good again.  Thanks!
Pts go to SR, as he ultimately send the link to the program that fixed it, but thank you ALL for your help very much!  Well worth the 500.
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sunray_2003Commented:
Thanks Budalite...
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William_CachoCommented:
I'm having almost the same problem on a pc.  It is able to send packets but cannot receive.  I've tried Spycheecker Winsockfix but it doesn't work on this machine.  It worked on 3 other machines but not this one.  The differences between this machine and the others is that the other 3 were Dells and this one is a generic.  Also it seems as if thou the generic has boot from network card enabled.  Even if the computer is turned off the activity light on my cable modem still flashes.  Any other suggestions?  I have tried a new network card, reinstalled Windows and nothing works.
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BudALiteAuthor Commented:
If you have reinstalled windows an installed a new network card, and this computer still can not get on the internet but your other computers can, my guess would be that your router is not allowing this computer on the network.  Have you tried to plug the computer directly into the cable modem yet?  That would help determine if it is a problem with the router or PC.
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William_CachoCommented:
Yes I have the modem plugged directly into the network card at this time.
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gerpaqitCommented:
had something similar a while back... i did not have time to fix it so i did a system restore to 2 days previous and it sorted it out.   the spyware software i had used had removed some of "limewire"..this is when the problem began.  i did the system restore and removed limesire ising add remove progs.....hope this helps...
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mmizzellCommented:
reset ip/tcp stack
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afalkovCommented:
I run into the same problem.  Some one already suggested to reinstall TCP/IP.  I only want to add.  Before reinstalling it, delete winsock and winsock2 from registery, reboot computer then reinstall TCP/IP.  There is an knowledge base article on this subject.
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astragalixCommented:
Hi.  I had the same problem and it turned out to be a hardward problem with the linksys router.  Try the following:

a) open the webpage config for your router (192.168.1.1, probably), and do a software reset;

b) stick a paperclip into the reset switch until the "diag" light lights up AND goes off again; turn off all the computers and reboot.

(if this doesn't work, then consider)

c) buy a new router (which is what i ended up doing, everything worked fine after that.



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ssgbuckCommented:
I believe there is a much deeper issue at work here, something we have not yet discovered from the world of spyware/malware. I manage a major help desk for a large corporation and have seen this issue a handful of times. I have at my disposal all of the tools listed here and then some. In the every case, the same Brand and Model NIC did not solve the issue, but a different model NIC did???? More questions arose when the old NICs were tested and found to be in good working order. In one case 2 weeks after the new NIC was installed the problem reoccurred after running the usual Spyware removal tools. The PC was then reimaged and now works fine. (For the moment) Some piece of spyware has to be hooking into the XP OS in a place we have not yet looked.

My question: Can the MAC Address be compromised in anyway that would cause a PC to lose its LAN connectivity?

Theory: Spyware is hooking into the MAC settings somewhere in the Registry and causing XP to ignore the NIC that is installed. (Thus the inability to change the firewall setting) This also explains why a new NIC of a different brand with a different MAC solves the problem.

Any ideas?
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