Lenovo Z580 - Illuminated blank screen upon startup. NO POST. NO BEEPS

Hello everyone!

My lenovo laptop had a windows 10 installed which was acting weird

(Couldnt use the OS, couldnt revert back etc)

To solve this i removed the hdd, disassembled an ext hdd and used the usb extension with the lenovo hdd to backup all my data on another laptop with acronis

Later i created a partition on the clean drive and flashed an img of windows 10 to fresh install it

But the lenovo laptop doesnt even POST now. There is an illuminated blank screen as soon as it is turned on irrespective of whether or not the hard is installed on the laptop

Also the laptops bios is corrupted and cant be changed

Same goes with the boot menu

Any suggestions?

Tried all suggested steps explained above with unchanged results

But my question is how can the board suddenly fail in about a weeks time having done nothing to the laptop?