How to make my iPhone 5 detectable/recognized by my laptop?

Ok i got an iphone5 with ios8. When i try to connect it to my laptop it doesn't show up at all. I look in iTunes window for devices and nothing. I look in device manager and nothing. So i borrow my brothers iPhone when i did it with his it showed up perfectly. We have exact kind of iphones. My charge/sync port charges but i cat seem to sync it. The cord words for charging ad syncing on my brothers phone for both uses but just charging on mine. I'm lost at what to do. Ps i have a widows 7 hp laptop.

I would go to apple support
https://getsupport.apple.com
Go to the tab "using iPhone and iTunes" and then "device not seen in iTunes list" and follow the prompts

  • Tmobile sim card can't be recognized in iPhone? I jailbroke and unlocked my iPhone 3GS locked to AT&T, but I'm wanting it to work with tmobile. I put the sim card in but it doesn't get service still. The sim card has a data plan and everything. The sim card is at least 6 years old. Do I need a new one? Or how do I make the tmobile sim care work? I used redsn0w to jailbreak it.
  • Problems with iPhone not being recognized on iTunes? My iTunes stopped recognizing both my iPod touch and my iPhone, and I have done everything that I have seen online to do (uninstall and reinstall iTunes, uninstall and reinstall device drivers, change usb ports, change iPod cables, etc.) and my iTunes STILL won't recognize my iPhone. Any suggestions?
  • My Wi-Fi is recognized by my iphone 4, and loads but won't connect. How can i fix this? I have an iphone 4, and before my home Wi-Fi would connect instantly, but now when i go to my settings, the Wi-Fi keeps loading and loading, but the check won't appear. The Wi-Fi sign turns blue, but no check! It works on my PC, and my siblings andriods, but not my phone. I've tried everything, reseting the network, turning my phone off. Nothing seems to work. I'm using my 3G now.
  • My iphone 4s can't be recognized in my laptop (windows 7)? Other iphone 4s can be recognized in my laptop, even 5s, my iphone 4s can be also recognized in my mom's laptop, but not in my laptop