How to I sync my iPhone to a new laptop (old laptop is completely dead)?

I want to be able to have my iPhones music, photos, videos, contacts and apps and everything backed up on my laptop in case something happens, but my old laptop, an HP is TOTALLY dead, i got a new macbook pro. The problem is, is since i want to since my iPhone to this new laptop, won't it delete EVERYTHING on my phone! That can't happen! I have too much on there i can't loose. There's no way my old laptop will even turn on, I've searched on the internet for solutions but everything says transfer everything from your old laptop… But my old laptop won't even turn on!

Apple has instructions on doing exactly what you want at the iPhone links. I won't duplicate here.

An iPhone can be synced with only one iTunes account at a time.once you switched to a new iTunes account or a new computer. You have to authorize your iPhone to it at first, then you can upload music and video from the new iTunes to your iPhone. But this way will overwrite the original files on iPhone with the new iTunes. You may try this iPhone transfer, it can help you copy files from iPhone to computer for backup, you can also use it as an iTunes alternative to upload music and video. It will not erase your original iPhone files. It's safe and works pretty well for me.
http://www.msplinks.com/MDFodHRwOi8vd3d3LjAwMS1zb2Z0d2FyZS5jb20vaXRyYW5zZmVyL21hYy5odG1s

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