Windows 7: Need backup software for HDD

hi there, i'm new here..actually when i start to begin formatting my pc, it never shown my HDD. When i used my HDD to another PC's it shows the same(HDD doesn't show up). For information, i used Western Digital HDD and it's not the new one..Can anybody help me to solve this? i mean, is any software out there can make my HDD shown or at least backup my stuff in there.I hope my HDD doesnt corrupted. Please. Need ur help

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I'm not trying to be rude but I'm ghuessing english is not your native language, because I'm having just alittle trouble following you.
Are you saying when you plug in your HD it doesn't shoup in your bios?
If this is the problem are you using a IDE/PATA or an SATA drive?
Lets get started with this fo now
Thanks. Fabe

owh, sorry for my english, yes, i'm not using english in daily routine but i try to make u understand what my problem is. Ok, actually i have a problem with my windows which is corrupted. Then i try to format it by using a USB method, the problem is, when it starts to begin, windows cannot find my HDD to install the windows..so im stuck in there..after that, i try to use my HDD to another PC's just to see whether is my HDD corrupted or not and the PC cant find my HDD installed there..
i need to backup all my data inside the HDD

for your information, im using a SATA drive..
and in a BIOS also can't detect my HDD when i'm plug in it
i really hope that my HDD is not corrupted