Will iTunes lose all of my songs if I sync my iPhone?

So recently my old laptop died and it can't be fixed without losing all my data, which isn't backed up. This is an issue because my I had alot of songs on iTunes on there. I now have a new laptop and I have downloaded iTunes and it recognizes my iPhone but I'm scared of syncing my iPhone with new songs because I don't know whether it will delete all of my songs that are on me iPhone but not on my computer. It would take a long time to redownload all the songs that aren't on my new computer.

Its all on your old hard drive don't worry just don't sell or throw away your old laptop

Yes.

Yeah you will lose all the songs if you sync up your iPhone to a new machine. That's the sh*t thing about Apple, is that they're overprotective and have zero care for their customers.

If the hard drive in your old laptop isn't the reason why the laptop is "broken", and the hard drive still works just fine, then here's what you can do.

Unless you formatted (which means "totally erased and reset") your hard drive, which is really unlikely since you'd know if you did, all your data will still be there.

You can purchase something called a hard drive enclosure. Basically it's an external hard drive without the hard drive, so you can choose what hard drive you put inside it making them interchangeable. They'll generally have USB connectivity and may require external AC power.

Typically laptops have 2.5 inch hard drives inside them, so you'd want to get a 2.5 inch hard drive enclosure. Get somebody to remove the hard drive from your old laptop and fit it into the hard drive enclosure. Then when it's fitted you can plug the hard drive enclosure into your new laptop, browse to where your music is (and other personal files for that matter) and copy them straight across to your new laptop's hard drive.

You can pick up these external hard drive enclosures for pretty cheap - I've seen some on Amazon for as little as £7. They're worth buying.

Then when all the music is on your new laptop you don't have to worry about totally losing your music on your iPhone. You can just re-sync it to your new laptop and all your music will still be there.

I don't know much about iTunes, but I know you should be able to take the drive out of the broken laptop and connect it to a desktop or buy an external case for it and then you can copy everything from the old drive to the new laptop.

Now, I understand that some windows problems can't be fixed without wiping the drive, but you can boot to some versions of Linux on a USB drive, which will give you access to the information on the laptop and allow you to use the laptop without reformatting the drive.
You can connect the old laptop to the new one using a Wi-Fi connection and copy what you need that way. The Wi-Fi connection isn't the fastest way to connect, so if you can borrow a short cable that both laptops can use, you might prefer to do that. It just depends. If the old laptop only has a 100Mb network card but it uses wireless-N, then the wireless will be faster.

In any case, if you boot to Linux and connect your iPhone, you can just access it like it's an external drive and copy all the music into a backup folder. Then boot into windoze and sync, and if it erases your music, then tell iTunes to get music from the backup folder you made.
I recommend you install Linux Mint since the layout is so similar to windoze. You can choose to install it on the same partition or you can create a new partition. If you're not familiar with making partitions, I recommend you just install to the same partition in a side by side install.
Grub will be installed too, which will allow you to pick which OS to boot on startup. You could also just boot from a live DVD without installing if you only want to use it just the one time. Download the image and burn it to a DVD as a disk image (don't copy as a file; that won't work).
You could also install VirtualBox and install a virtual machine using the downloaded disk image, just in case you don't want to burn a DVD. I don't know why I didn't recommend that first.
https://www.virtualbox.org/...albox.org/

If your old laptop has a DVD drive and you don't have a 4Gb or larger thumbdrive, then go ahead and make a Linux Mint live DVD so you can boot and use your old laptop. If you want to use a thumbdrive, then you will need to download Unetbootin and use that to create a live image on the thumbdrive so you can use that to boot your old laptop.