I have been having problems on my 8 year old Dell Inspiron 1525 regarding the inability to complete Windows updates so in exasparation I loaded in my Win 7 disk and reloaded the OS, keeping my existing files. All well and good until it asked me for the key to register the program. Nowhere to be found. I could pay Microsoft $109 for a new key, not going to happen as I am on the verge of getting a new laptop anyway if this keeps up. So my question: Can I do a restore to get back to my previous "legit" OS? Of course, right now it keeps telling me I must have a pirated copy.