Wireless Networking will not connect to my PC.

I have an HP desktop running Windows 7 Home and there is some problem with "Diagnostic Policy Service".  It will not start and I can not connect  my wireless network adapter to my router. Also I can not turn on Windows Firewall. I am thinking that there is spyware or malware on the PC. Is there a way to fix it without having to do a full system restore? If I have to do a Full system restore, what is the function key to press at boot up? I thought it was F10 but that is not it.
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AdrienneSperberConnect With a Mentor Tech Support CoordinatorCommented:
refer to this article: http://support.microsoft.com/kb/943996

then go into device manager and uninstall network device, reboot and automatically install the network device again.
dark_fisherConnect With a Mentor Commented:
you may try to reinstall driver for your WI-FI addapter,
Secjnd - you may try to restore system by using this utility
Reading Hel will be nessesary
bbbb2Author Commented:
I printed the Microsoft article and I am going to go back over there and see if I can repair it with this info. I will let you know how it turns out.
Thanks Adrienne,
nobusConnect With a Mentor Commented:
if you suspect malware, run these :
 http://www.malwarebytes.org/mbam.php                   MBAM
http://majorgeeks.com/RogueKiller_d6983.html                  Roguekiller
bbbb2Author Commented:
I just gave everybody a little something. <br />Thanks again for your advice,<br />bbbb2
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