system restore has disappeared
so you have more than connection problems and until you get a all clean from the malware pros there is no sense trying to fix anything
we can try power cycling the modem and router but if that fails
Download and Run OTL and post the log in the malware removal forum
Lets try and see whether you have equipment related problems. In this step, we will allow the equipment to self-diagnose and resolve the problems.
If you suddenly lose connectivity over your High Speed Internet line, have a slow connection or are unable to browse the Internet despite indications that you are connected, it is possible that your modem is not communicating properly with the Internet network.
Save all your current work, close all open applications, then shut down your computer ...unplug router and modem
Power up the modem first and after it gets initialized and all the lites are steady..
power up the router...after all the lites are on...
power up the computer
The above steps should take care of your problem
no joy then try this..
TCP/IP stack repair options for use with Windows XP with SP2.
For these commands click on Start
..... type in...CMD
....to open a command prompt box
Reset WINSOCK entries to installation defaults...type in ... netsh winsock reset catalog
.... press ...enter
Reset TCP/IP stack to installation defaults...type in...... netsh int ip reset reset.log
... press ...enter