Great! Did it take more than 1x Boot/Restart to Desktop? Let me know if you find you have more than 1x for BootUp.
If you are sticking with V7.1, then Start with your Windows Updates. On my WinXp Sp3 box, I have only 46 CRITICAL Patches installed and down about 80+ patches in total. Some of these Patches are more problematic than helpful and has not been a problem with me with a Strong Firewall.
Then if you need to install Nod32, (v4 or v5) here is a link to my install process:
Keep in mind, if you don't set your New AV Settings correctly... you may REALLY Delay your BootUp since it is going to Scan Everything before you can Boot BackUp.