My iPhone 5 won't charge

I have a iPhone 5 and this morning i upgraded it from iOS 6 to iOS 7. When the battery was low, i had to put it on charge. After 2 hours i checked bu it was still switched off. Before my battery died, i put the charger in and it said "This cable is not certified".
How do I fix this?

IPhone backup file on Windows Computer

I updated my phone to IOS7 manually through my windows laptop and it backed it up automatically to iTunes. When I went to restore the backup, it asked for a password and I tried every password ever and won't work. I don't remember ever even setting one up originally. I googled all of this and found a program that will recover my password so I can restore it. I NEED the backup. Well I can't even find the file on my computer with the backup. It's under my preferences on iTunes though. I found it on my browser though. I copied and pasted the address to my computer and it says no files found.

Activate Mic on Line App iPhone?

I installed iOS 7. When using Line App, I got flash message to Allow Microphone on Line and I accidentally selected No. Now I can't talk with my friends on Line… Can you let me know how to reactivate this please?

Lost my iphone passcode, if I restore, does icloud get wiped too?

I saved everything to icloud before hand and all my pictures are on my computer already so i'm just nervous about losing my contacts, bu those should be saved to icloud, i'm wondering if I end up having to restore it will my icloud get wiped too or will I be able to get to my contacts again?

Where do i find the recordings on iphone 5 IOS 7?

Even tho before iOs 7 I haven't known where do my recordings go. I downloading this app called "voicy video booth" it changes your voice with in the video it's self. I saved one and it said "saved to recordings." but the problem is i have no clue where that is. I looked in my photos and that. But it wasn't there, can anybody help me please!