I just gotten over an issue with trojans and malware on my computer so i installed an anti spy program( super anti-spy) but i noticed i still had issues with unknown pop-ups on my browser so i also downloaded an anti-malware(Malware Bytes)
and after finally getting my computer clean i think i also erased some very imporatant registry keys needed to run my windows xp and certain websites properly..do i have to go to a computer specialist?

What is the best maintaining utility for windows XP and by maintaining I mean registry cleaning and fixing, freeing disk space, making my computer faster and please give me answers with some reference and sources.

I have performed a clean install of Windows XP multiple times booting from a CD; however I seem to be experiencing difficults booting from our Dell Demension 8100. The keyboard works, as I am able to use it to load both the BIOS and Boot Choice Menu. I am also able to select the device to boot too. Once the device is selected, the message "Press Any Key" appears, I have tried pressing just single keys and also jamming as many keys as possible on the keyboard. However, no combinations appear to work. I am using a USB keyboard which appears to work fine during the boot sequence. Any help is appreciated.

I have also allowed it follow the boot order set in the BIOS. The "Press Any Key" is displayed and pressing single keys and/or combinations does not appear to work.

Thanks in advance.

I try doing this:…..?

Windows could not start because the following files is missing or corrupt
\WINDOWS\SYSTEM32\CONFIG\SYSTEM or \WINDOWS\SYSTEM32\CONFIG\SOFTWARE

Insert and boot from your Windows XP CD.
At the first R=Repair option, press the R key
Press the number that corresponds to the correct location for the installation of Windows you want to repair.
Typically this will be #1
Enter in the administrator password when requested
cd \windows\system32\config
Depending on which section was corrupted:
ren software software.bad or ren system system.bad
Depending on which section was corrupted
copy \windows\repair\system
copy \windows\repair\software
Take out the CD ROM and type exit

How can I get administrator password when requested?…….thanks

My system got corrupted and I had to re-install Windows XP. I made a back up, and formatted the entire disk.

I can get to the point where files are copied to the destination file, and it would re-boot.

However instead of launching a Windows GUI environment, performing the next operation and Setup Wizard coming on to Regional and Language operations, I go right back to Welcome to Setup.

I tried it many times and it seems to just loops in the same cycle over and over.

Can anyone help me?