Otherwise, find the invoice or purchase receipt from the retailer where you bought the laptop. Typically, it contains the ...

Well, you can find the serial number on the packaging, if you still have it. It’ll be printed next to a barcode. It’s also worth checking the receipt or invoice if you’ve still got those.

You can also find the serial number on the barcode of the original box, the receipt, or the invoice. Syncing your device using Finder or iTunes is another way to find the serial number.

Locate the invoice for your video-card purchase ... If you remove your video card to look for a serial number, verify that you've reinstalled it correctly before you start your system backup.

Supposedly, someone calls and asks for your office copier serial number and the next thing you know, a palette of cheap, low grade copy paper is delivered, along with an invoice for some ...