Click on the Avast ball. Then click on Additional Protections then on AutoSandbox then on Settings then uncheck Enable AutoSandbox. OK
:!: If you have a previous version of Combofix.exe, delete it and download a fresh copy. :!:
:!: It must be saved to your desktop, do not run it :!:
:!: Disable your Antivirus software when downloading or running Combofix.==>Right click on the Avast Ball and select Avast! Shields Control and Disable Until Computer is Restarted ( I suppose you will have to download CF on one machine and transfer it to the desktop of the other via CD or USB. Make sure the anti-virus is off on the good machine while downloading and transfering CF.
Download and Save this file -- to your Desktop -- from either of these two sources:
Rightclick on ComboFix and select Run As Administrator to start the program.
* :!: Important: Have no other programs running. Your Task Bar should be clear of any program entries including your Browser.
* A window may open with a series of Disclaimers. Accept the Disclaimers to start the fix.
A caution - Do not run Combofix more than once. Do not touch your mouse/keyboard until the scan has completed, as this may cause the process to stall or your computer to lock. The scan will temporarily disable your desktop, and if interrupted may leave your desktop disabled. If this occurs, please reboot to restore the desktop. Even when ComboFix appears to be doing nothing, look at your Drive light. If it is flashing, Combofix is still at work.
A file will be created at => C:\Combofix.txt. I'll need to see that in your reply.
Start, (All) Programs, Accessoriesw then Command Prompt (if Vista or Windows 7 you need to right click on Command Prompt and Run As Administrator). Type with an Enter after each line:
For your network issue:
(Check the output. Is DHCP running? IF not: right click on (My) Computer and select Manage then Services and Applications then Services. Find the DHCP or DHCP Client service and right click on it and select Properties. Make sure the Startup Type says Automatic or Delayed Automatic (if not change it and Apply) see if it will Start. What error do you get? Look under Dependencies tab. What does it depend on?)
(what error do you get?)