I would like to change my 320 HD Drive in my Sony Vaio VPCEB4J0E Laptop for a Samsung SSD 840 Pro 512GB. Would this SSD be compatible in this Laptop? At the same time I want to change the operating system from windows 7 to windows 8. This would mean doing a clean install rather than cloning the HD Drive. I have never done something like this before, so would I encounter any major problems that I should be aware of before I start? Another reason for doing a clean install is that I have loads of crap files on the laptop, so I would like to choose what software and files to re-install. Would this be a problem?