Windows 7 won't boot from my old hard drive on my new PC.

BaNaNaMaN_

Honorable
Nov 19, 2013
4
0
10,510
Hey there.
I just built a new PC. I put my old hard drive into my new PC so I would have my work files. But every time I try to boot up it keeps coming to windows is having problems booting. When windows asked if I wanted to repair or continue normally. Whenever selecting normally after 10 seconds it restarts and comes back to that. When I hit repair and then select for windows to fix the problems itself. It does not do anything. I had lost my CD key some months or years back so I cant reinstall the OS. I forgot to make a backup image. So please help at risk of losing my job if I can't get the hard drive to work. Sorry if I misspelled anything or using incorrect grammar just freaking out and praying that something works.

Specs if it plays any role.
CPU: Intel i7 4771 @3.5Ghz
MoBo: ASUS Z87-Plus
RAM: Patriot VIper 3 (2x4Gb) 1866Hz
GPU: GTX 650 Ti SSC
OS: Windows 7 Ultimate 64-Bit
Monitor: Samsung SyncMaster 205BW
HD: Western Digital Caviar Black 1Tb 7500RPM
Case: Raidmax Blackstorm

Not sure if these will do anything here but just incase.
Mouse: Roccat Lua
Keyboard Sharkoon Skiller
 

epicoverclock

Honorable
Dec 7, 2013
269
0
10,860
if you want to retrieve the cd key you have to firstly copy the C:\Windows\System32\config folder on external storage. you can access it with a live cd like ubuntu live cd without installing ubuntu to hard drive. download ubuntu from here: http://www.ubuntu.com/download/desktop

next install windows 7 ultimate 64bit in trial mode from here:http://msft.digitalrivercontent.net/win/X17-24395.iso

use a program called "ProduKey" to recover windows key. download it fom here http://www.nirsoft.net/utils/product_cd_key_viewer.html#DownloadLinks

after that ativate the trial vesion of windows with your key that you retrived from "produkey"