I am more of a software developer/programmer then a hardware/computer tech person but I can still build my own PC's and fix them, it's just not something I do for other people too often.
With that said, I have a lot of people frequently coming to me wanting me to fix there computers which are usually filled with virus and just a bunch of garbage. I Know there are many scanner programs to help detect and remove this stuff but I am a firm believer that it is generally better to just wipe the drive and start with a fresh install of Windows and everything else.
If I am doing this on my own PC's I know that I purchased Windows 7 and I have my own serial numbers for my own use. The problem I am facing is a lot of people who come to me will have a laptop or desktop that came with Windows XP installed so the serial number found on there case is usually for those computers but they at some time had Windows 7 installed. If I tell them I will have to install Windows XP, they aren't going to be happy with that and often they don't have the Windows 7 serial as someone else had previously installed it for them.
Is there anything can do to install windows 7 on a PC that already has Windows 7 but does not have the serial number on the case or in there possession? What are my options to make the client happy?
Sorry if this seems like a dumb question but it is one I have had for several years, I usually turn away work because I am not sure how o handle this for people. I would hate to tell them the only solution is to purchase another copy of Windows 7 and have them tell me, "well the other guy installed it for me without a problem"