Windows 7 not booting with blinking cursor

Hi im ramesh i bought a new hdd(seagate barracuda st2000dm001 2tb)
Well i installed Windows 8 on it and its running perfectly and now i want win 7 and after installing the win 7, I mean just after
When it says preparing desktop. My pc shuts down and restart and after mother board logo all i get is a
Blinking cursor with black screen which continues for hours

So can anyone help me fixing thi, any help would be greatly appreciated.

Were you wanting to Dual Boot Installation - Windows 8 and Windows 7? If not did you delete all partitions at Steps 7 and 8 during Clean Install Windows 7 and create new for Win7? If not try that now. Unplug all other HD's and peripherals.

If it fails again 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.

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.

Thanks a lot.. U solved my problem. :)