I have an 8 year old pc that had become very slow, wouldn't accept usb connections and would not shut down correctly. It hadn't been used for about 3 months but i have some time on hands this week so decided to tackle it yesterday. It's a mesh system and i still have all the back up disks it came with. I found a website that explained how to format and i followed it word for word. I used my recovery disc and booted from disk, i then deleted all partitions and reinstalled windows. After that i reinstalled motherboard drivers and then other drivers off disks that i had. I took a couple of hours doing windows updates and installed norton 360 prem edition. It's working super fast now, almost to good to be true. Just a little bit concerned that i may of over looked something. If my system had virus previously would i have of removed it ??? and is there anything else that i may need to do..