DELL INSIPRON 1440 CANNOT BOOT WINDOWS 7

Hi,

My DELL INSPIRON 1440 cannot boot to windows (Windows 7 Ultimate). Stuck on black screen with blinking white dash; i believe this is after POST (after the DELL logo, before entering windows. CTRL ALT DEL restart the laptop)

CANNOT enter F8/windows system restore. CAN access F2 or F12 for BIOS manager and BOOT selection.

Last activity was ordering a chkdsk on one of my partition in my one and only HDD. The chkdsk did not go through, rather ordering me to restart the laptop. Here was the stuck began. NO BLUE SCREEN prior to this.

I suspect the laptop failed to locate boot system or something.


Tried fix:

1) Run DELL Diagnostic Tools (F12 menu), result PASS but stuck on last menu windows (DRMK or something, when we can input C:>)

2) BIOS Default option (F2 menu). NOTE: there is NO HDD Option under the Power Management Tab in F2 Menu.

3) Attempt System Restore via CD/USB. I have a different windows installer (Win7 Pro as opposed to Win7 Ultimate) in DVD Media, and created an NTFS USB system repair iso file from internet. I manually selected those items to boot in separate occasions.
Nothing happened when I inserted the DVD; and when I use the USB, it said there is not windows installed in the system.

I've also detached and re-attached any 'outside' and easy to plug-in and out hardware, including the HDD and CD-RW. Also other things such as printer attached currently.

TOOLS that I have. I have a somewhat working Windows 10 laptop. I am ordering an enclosure to diagnose the HDD from outside of my DELL 1440.

I have a somewhat OK understanding of how computer works but no IT background

Any help will be appreciated!

Thanks and cheers!