Black Screen During WIN 7 POST , Black Screen Even In Safe Mode

Hi, I have this 4 year old Lenovo Y560(config below)

The discrete graphic card has probably fried a long time ago, so last year when I did a clean install of Windows, I had to disable ATI Card permanently in the device manager using safe mode and used the Intel integrated card. A few days ago, I booted up windows only to encounter, "A disk read error has occurred, press ctrl+alt+del to restart" . I tried to boot up using WIN 7 install disc, but soon after the Starting Windows logo , the screen turns black and I am left with a cursor in a black screen. I tried to boot into Safe Mode but still I encountered a black screen with just the cursor .

I booted with Ubuntu live usb and was able to access all my partition and did back up and even formatted the Windows Partition. I tried to boot using a WinPe and faced the Black screen with a cursor again. I even reset BIOS to default, changed Graphics Adapter from "Discrete' to "Switchable' and vice-versa, but no effect at all. When I boot up using Ubuntu and ran lspci | grep VGA I can see both cards listed. I even tried to boot up using Windows 10 preview disk, still I get a black screen after the Windows loading screen.


I can't afford to buy any laptop presently since I am currently at college, so using Ubuntu for now. Is ther any way to install Windows 7 again? Is it possible to get the ATI Card working properly- reballing, reflow?
Any way to permanently disable the ATI card and get windows to boot up using the integrated chip.


Notebook: Lenovo IdeaPad Y560
Processor: Intel Core i5 460M
Graphics Adapter: Switches B/W Intel HD & ATI Mobility Radeon HD 5730

What other graphics adapter choices are available in BIOS setup? If you choose Switchable is there software on the Lenovo site for your model that's needed? Are you using the Display adapter software from there?

Have you tested your HD with the maker's HD Diagnostic extended CD scan, followed by a full Disk Check on a single disk partition you create?

Then work through the steps for Overcoming Windows 7 Installation Failures - Windows 7 Help Forums including trying an alternate install method (disk><flash stick) with new media. These steps overcome almost all install failures, so you'll be reasonably sure the problem is hardware or BIOS settings if nothing works. But don't skip any steps.

Try Clean Install Windows 10 Technical Preview to see if there's any difference with a more modern OS install. It's already a very polished OS and worth testing this.