See if you can boot into Last Known Good.
Reboot and when you see the maker's logo, hear a beep or it talks about F8, start tapping the F8 key slowly. Keep tapping until the Safe Mode Menu appears and choose
Last Known Good. See if that works.
If not then do a system restore
http://news.softpedi...re-47381.shtml.If none of that helps then:
In IE, Files, uncheck Work Offline. Restart IE and test. If still no good:
In IE, Tools, Internet Options, Connections, LAN Settings, then uncheck all boxes and OK. Close IE and restart IE.
In FireFox, (Tools or the Firefox button), Options, Advanced, Settings, check No Proxy then OK. Close Firefox and restart Firefox.
In Chrome, Wrench, Options, Under the Hood, Change Proxy Settings, uncheck all boxes, OK.
Restart and test. If still no good:
Start, All Programs, Accessories, (Right click on Command Prompt and Run As Administrator). Type with an Enter after each line in the code box:
ipconfig /flushdns
netsh winsock reset catalog
netsh int ip reset reset.log
(I use two spaces in the code box so you will be sure to see where 1 space goes.)
Reboot and test. If it still doesn't work:
1. Click "Start," click "Control Panel," click "Network and Internet Connections," and then click "Network Connections."
2. Right-click the network connection that you want to configure (the one you use to connect to the Internet), and then click Properties.
3. On the General tab (for a local area connection), or the Networking tab (for all other connections), click "Internet Protocol (TCP/IP)", and then click "Properties."
4. Click "Use the following DNS server addresses," and then type 8.8.8.8 in the Preferred DNS server and 4.2.2.1 in the Alternate DNS server boxes.
5. Click "OK"
Reboot and test. If it still doesn't work:
(Start) Right click on My Computer, select Manage then Device Manager. Find the Network Adapters and click on the + in front to open up the sub entries. Right click on each sun-entry under Network Adapters and Uninstall. (Doesn't hurt to write down the names in case you need to download the drivers from the PC Maker's website. Normally you don't but with malware you never know.) Reboot and test. If it still doesn't work:
Start, All Programs, Accessories, (Right click on Command Prompt and Run As Administrator). Type with an Enter after each line in the code box:
ipconfig /all
ipconfig /release
ipconfig /renew
ipconfig /all
Report any errors you get and the IP addresses of the last ipconfig /all