Let me explain my issue here. I work at a small business computer store. I have a machine in right now that does not seem to work properly. I have taken the customer's HDD out and imaged it to another HDD. All of the customer's data stayed with the machine. I sent him home, and the issue continued. I then installed a new HDD (brand new, not re-certified), installed Windows with the customer's licence, and set up his dial up account and email account. After this the computer seems fine. The customer took the computer for a weekend and said that he had no issues with it. I have the machine again, to install the original HDD, with his original Windows. I have put that back into the machine, and lo and behold, the machine continues to freeze up when exiting any internet application, as well as adobe photoshop. I am at a loss with this machine now. I have changed the PSU, the Modem, the DVD drive, the HDD, installed new Windows, and left his data out of the picture. I do not know what else I can do. Is there anything that anyone has come by regarding an issue like this? Or is this machine destined to continue being a hassle for myself and the customer. Thanks in advance!