Thanks everyone for your replies and suggestions
i had a knowledgeable uncle have a look at the motherboard, and though his level of expertise is well beyond mine i gathered that there was power getting to the motherboard but once there some parts were powered and others were not. So i would guess then that it would be more likely then that it's the LCD panel thats killing the power.
Again, my knowledge is limited when it comes to the inner workings of a motherboard, i mainly stick to replacing components and getting out of there, so apologies if any of this is badly worded.
reseated the video cable a fair few times and it had no effect. I'm sure the others are seated correctly so yup sounds like the motherboard is fried then @Vivid
Professional either by me not using an anti-static strap or this new LCD panel, which (i think) temporarily knocked out my own laptop as i mentioned.
Thanks for your suggestions and help, i guess i could try give it to a professional and see if it's possible to get it fixed or start strippin' parts of and selling them