Black Screen/Blank screen after screen replacement

[rakoo]

Hello,
Recently my laptop screen had to be replaced due to a cracked screen. Original screen was a Samsung and the new screen is LG. After this, whenever I install Intel HD graphics, windows boots up till the login screen and then goes black, one bright flicker, then completely black again. However, when I boot into safe mode and replace Intel HD graphics driver with Standard VGA adapter, everything works fine, except for crappy graphics ofcourse. I tried installing various old/new/latest versions of driver software, upgrade/downgrade BIOS, install monitor.inf file from lenovo website for this laptop model, everything.
Odd thing: running Dxdiag shows my current display to be 1200x800 (32bit)(1hz).
So, I tried to change the display refresh rate in advanced settings> Screen refresh rate, no luck, no other option except ' Use hardware defaults'. So, I went ahead an modified registry values as given here:
How to Modify the Video Refresh Frequency in the Registry

Again, no use. After I reboot and go back and check, its set to 1 by default.

Tried 4 clean installs, installing on a completely new HDD, Windows 7 Pro, Windows 7 Ultimate, Windows 8 , everything..

Is it a screen problem? Or some hardware ID kind of thing?
What should I do ?
Please help!



Dxdiag information:


------------------
System Information
------------------
Time of this report: 2/3/2015, 06:26:14
Machine name: UNKNOWN-PC
Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_rtm.101119-1850)
Language: English (Regional Setting: English)
System Manufacturer: LENOVO
System Model: 3626AG2
BIOS: Ver 1.00PARTTBLx
Processor: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 4096MB RAM
Available OS Memory: 3892MB RAM
Page File: 2051MB used, 5730MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode

------------
DxDiag Notes
------------
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Input Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (retail)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: Standard VGA Graphics Adapter
Manufacturer: (Standard display types)
Chip type: Intel(R) HD Graphics (Core i5)
DAC type: Internal
Device Key: Enum\PCI\VEN_8086&DEV_0046&SUBSYS_215A17AA&REV_02
Display Memory: 1721 MB
Dedicated Memory: n/a
Shared Memory: n/a
Current Mode: 1280 x 800 (32 bit) (1Hz)
Monitor Name: ThinkPad Display 1280x800
Monitor Model:
Monitor Id:
Native Mode:
Output Type:
Driver Name: igdumd64.dll,igd10umd64.dll,igdumdx32,igd10umd32
Driver File Version: 8.15.0010.2993 (English)
Driver Version: 6.1.7600.16385
DDI Version: unknown
Driver Model: unknown
Driver Attributes: Final Retail
Driver Date/Size: 2/20/2013 03:14:11, 8314368 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
Device Identifier: {D7B78E66-4306-11CF-1B34-EA1CACC2CB35}
Vendor ID: 0x8086
Device ID: 0x0046
SubSys ID: 0x215A17AA
Revision ID: 0x0002
Driver Strong Name: Unknown
Rank Of Driver: Unknown
Video Accel:
Deinterlace Caps: n/a
D3D9 Overlay: n/a
DXVA-HD: n/a
DDraw Status: Not Available
D3D Status: Not Available
AGP Status: Not Available

 

[TVeblen]

Not all laptop screens are the same. It is important to get a "replacement" screen, not a "compatible" one.

On the back of the laptop screen is a product sticker (you can only read this before you install the screen). On that sticker is the manufacturer and model #. You can use that number to find exact replacements.

How did you come to choose the LG screen?