Runtime error R6034, itunesHelper.exe and the missing library MSVCR80.dll

Question

I made the mistake of upgrading to the new version of itunes and I appeared the following errors:
- Runtime Error R6034 on ituneshelper.exe
- Library MSVCR80.dll not found
- Error 7 (windows error 126)
  I tried to install and uninstall as they say apple forums, I researched on my own restoring records, and review it with MicrosoftFixit which is also a solution to the problem but none of the options mentioned above solves the problem. I'm about to format my pc, but I read it in 3 forums that solution does not help. Lords of apple, what's going on with you? Sorry forgot to mention that since I restored settings to my pc that was 1 month ago and nothing happened.
I have windows XP
250 gb hard disk
1 gb RAM
Thanks

Answer 1

first disable your antivirus (you can re-enable later)
go to start, right click on computer and choose properties - note if you have 64 bit or 32 bit operating system
then make sure all users on the computer are logged off
log into admin user (if yours isn't already one)
then uninstall in this order
itunes
apple software update
apple mobile device support (if it won't go - support.microsoft.com/fixit - skip step 1 and go to step 2 - click install or upgrade software or hardware - then scroll down to the bottom of step 3 and click run now next to Fix problems that programs cannot be installed or uninstalled - basically tell it you want to manually tell it want you wantto do and then choose to uninstall and choose apple mobile device - if it freezes or stops around the end then just quit it and relaunch control panel and the apple mobile device should be gone)
then continue to remove
bonjour
apple application support
then restart computer
click start - left click on computer - double click on c drive
double click on program files
make sure the itunes, ipod, and bonjour folders are gone - if they aren't select them, then right click and delete
if you are on 64 bit
complete the steps for program files and then also do program files x86
if you had to delete any of those folders manually restart again afterwards
for 32bit os - go to www.apple.com/itunes and download new itunes
for 64bit os - support.apple.com/kb/DL1615 and download the 64bit version of itunes for windows
this will resolve any issues related to the update
NOTE - this will not touch your playlists or media files - your songs are not saved in the itunes application itself those are in a different folder in your music folder