Computer hangs when running Outlook and IE

My computer hangs up when I’m using MS Outlook and Internet Explorer at the same time.
I have done all the checking on my Windows OS and disk drives, I already run the defragmentation and cleaned up for viruses and malwares but still nothing helps.
I already uninstalled and re-installed MS Office and I’m thinking if there are files that are still kept in the program settings for its automatically goes during the installation process.
I’m already out of ideas on what to do,
Can you please help me?
