Please bear with me as I explain my issue, as I am not very computer savy. I will do my best to provide a little history and the problem: 1) Laptop: Toshiba Model A665-S5170 Windows 7 Home Premium Processor: Intel ® Core i3 CPU M380@2.53 GHZ RAM: 4.00GB (3.80 GB Usable) System: 64-Bit Operating System Security: Norton Internet Securities 2) I generally use my laptop for shopping online, google searches and email. I was horrified to learn that someone recently hacked into my yahoo email account and was sending out links to everyone in my address book. 3) I changed the password for my email account and scanned for viruses. Per advice of others, I ran a free version of Malwarebytes, but it repeatedly froze my computer and programs were "not responding." 4) When I removed Malwarebytes, the computer ran without problems. 5) Hopeful that Malwarebytes Pro might work better than the free vesrion, I bought it and just installed it today. Ran a full scan and no malware was found. 6) Afterwards, I tried accessing different websites and programs, but everything starting freezing up again. All programs are "not responding." The only way I can get out of the freeze is by shutting down with the power button. Now, the only way I can access any information is by opening in safe mode. This is very frustrating and don't know what to do. I have seen similar threads, but much of your advice to others is Greek to me. I also bought MB for my desktop (also uses Norton Internet Securities) and am not experiencing any freezing problems. Any advice you could give would be appreciated. Remember, I don't know a lot about computers, so any instruction you give will need to be basic or well explained. At this point, I am feeling mad, scared and frustrated all at the same time. Is this a common problem? Or is this something I should consider taking to a computer shop to have analyzed?