My computers USB ports won't work

I have a compaq presario CQ62 running on windows 7. Recently my ports have stopped working. I have tried pretty much everything! It's really frustrating because I recently updated to an iPhone 5 and I couldn't back up my iPhone 4. Went to apple and they managed to back it up but still couldn't recognize my 5! I've managed to transfer everything from iCloud (which was a very painful process)

My laptop will sometimes recognize my USB but will never recognize my phone. I have tried uninstalling and reinstalling iTunes with no luck.

I'm getting pretty desperate now.
Any advice is welcome!

Get it checked

Try going to Device manager and uninstalling the drivers for your all of USB controllers and restart the computer. When prompted on startup for the device drivers point to c:\windows\system32\drivers folder.

Also, check the BIOS screens to see that USB is enabled.