Seriouse problems: is there decsion?

“ 1.Internet connection is lost.
2. Security center is off.
3. The Windows Firewall service is not running.
When try to turn on get prompt: "Windows Firewall settings cannot be
displayed because the associated service is not Running.
When try to restart Windows Firewall sevice: "Wimdows cannot starts
the Windows Firewall service.
Same in the Safe mode and from Adnministrative Tools.
Also failed to load Windows Firewall with Advanced Security snap-in.
Error code: 0x6D9
When try to use systen restore:
"System Restore does not appear to be functioning correctly on this
system.
The volume Shadow copy service used by Systen Restore is not working."
4. When I tried to shrimk files for Vista reinstallation, in Computer
Managenemt/Storage:
"Unable to connect to Virtual Disk Service"
and this all happend at once, after i was trying IObit Security
Scanning option "Network security"
Is anything possible and what and in what order I have to try to do?
Thank you in advamce and the Happy New Year!