Ran ComboFix, now I can't connect to the web?

My 2001 HP Pavilion 7955 computer running XP Home (has not been upgraded to SP2) is 8 years old and getting slower and slower.

So, yesterday I ran HJT (first time on this computer) to get a log and today I ran Combo Fix (first time on this computer) to get a log to post here and when Combo Fix was finished, I had to restart my computer because ComboFix left it stuck at the Windows screen (with zero icons). I have the ComboFix log if that will help…can’t locate the HJT log…yet. After the restart the icons came back on the desktop but all but two icons on the taskbar (bottom right) were gone. Only two left are Avast antivirus icons.

Now I can’t connect to the internet to post my logs (HJT (when I find it) and Combofix) here. Please help.