Hard Drive arent being detected?

whs said:

Is this one harddrive with several partitions or are there 2 physical harddrives (not partitions).

No it's only one hard drive that shows up with one parition

gregrocker said:

Unplug all other HD's and peripherals,

Boot into BIOS setup, reset to defaults, save changes. If an EFI BIOS you'll need to decide if you want UEFI BIOS vs. Legacy BIOS. If UEFI follow these special steps for Install, otherwise enable Legacy BIOS or Compatibility Support Module to proceed with normal install:

Set DVD drive first to boot, HD second, set SATA controller to AHCI, Save changes and Exit.

Then boot into Windows 7 installer DVD or flash stick burned or written using tool and latest ISO for your licensed OS version here. I would use a fresh ISO written with tool in Step 2 as yours is in question.

At first installer screen Press Shift + F10, or enter System Recovery Options to open a Command Box, type:

DISKPART
LIST DISK
SELECT DISK 0 (after confirming Windows 7 target HD #)
CLEAN
CREATE PARTITION PRIMARY
FORMAT FS=NTFS LABEL="WINDOWS 7"
ACTIVE
EXIT
EXIT

Next click Install Now, then Custom install to Clean Install Windows 7 to the partition you created. If it fails then report back at which step and the verbatim error message.

In addition read over these steps to understand the tools and methods which work best to get and maintain a perfect Clean Reinstall - Factory OEM Windows 7. The steps are the same for retail.

After install you can adjust partition size or Create new partitions for data, etc. in Disk Mgmt. You are creating the partition here for the purpose of wiping the HD and marking Active which overcomes certain install failures.

I'm not a computer genius so I really don't know what you've said, I managed however to set SATA to AHCI and set Boot 1 to DVD Boot 2 HD and saved all changes. I also manage to take one of the hardrives out and only use 1, now it say unallocated space, but I was able to proceed with the installation, ill write back to let you guys how it's going

These are the standard troubleshooting steps which resolve most install problems. They are written for the average user and have been used thousands of times before successfully.

If you have specific questions about a step and there isn't a blue link to click to illustrate it, then just ask back.