Registry Clean Software PC?

I’m trying to find a good Registry Clean Software for my PC. I see to be slowing down. I run Malewarebytes, and Avast! anti-virus and my windows XP SP3 seems to be slow got 3 gig Ram in the machine also. haven’t seen my computer this slow in a long time any one know any free Registry software or test programs that would be great.

IEEE 1394 driver and IPOD?

I just got an IPOD nano (3rd generation). Everything is working, but when I go to diagnostics, it tells me that no IEEE 1394 Host Controller. Is this hardware I am going to have to install or is it software?

The computer is only three years old (PC) running Windows XP.

Ive been having problems with my computer and long story short, the only thing i think will solve the problem is completely erasing my entire OS and everything off my hard drive. What is the best way to do this without logging in to an account (part of the problem is not being able to log in period.) I use Windows XP.

i have a windows xp and since about a month ago my internet connection has been getting slower and slower. i have already checked for viruses, spyware, and malware with ca antivirus, and i have cleaned/fixed the registry. the problem started after installing live one care, the computer didn’t have the requirements so i uninstalled it. i have checked the connection with another and the internet actually works fine on that one so i know for a fact it has to be the computer.PLEASE HELP!!!!!!!!

I’m trying to install Windows XP, Service Pack 2 on a computer. I tried to do this earlier, but the install did not finish and reverted to SP1. This computer was infected by Blaster and corrected (I believe). Now though, SP2 can’t even be downloaded (all ActiveX controls seem corrupted), Windows takes about 5 mintues to display the desktop when booted, and I can’t install any software. The computer has been scanned for rootkits (using F-Secure’s Blacklight), trojans (using Ewido), and viruses (using Norton’s). I’ve also personally cleaned the registry. Performing a clean-installation is not acceptable unfortunately because of programs installed that can’t be re-installed. Any suggestions to fix the computer? Thank you very much!