when i start my laptop the following message cams out: operating system not found
More info needed. Make, Model, Laptop, Desktop, recent other problems, recent changes in hardware or software, etc. You have to be a little bit crazy to keep you from going insane.
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HP laptop dv6700 In oktober2010 was upgraded from vista to windows7
Maybe the hard-drive is having issues, are you able to see if the hard drive shows up in the bios?
no floppies or cd's its trying to boot from first?