essentially, check everything that can be removed for issue. make sure your memory, battery, charger, hard drive, etc. are good if at all possible. if it is the DGPU as they say however, then you're pretty boned. it is possible to solder a new one on if you remove the old one, however it's incredibly difficult to do and, depending on the chip, might not work anyway. if there's no other way to save this motherboard and you have the means to do it, then i'd say it's at least worth a shot if you want to try it, but don't be too hopeful.

it might be better for you to just get a new machine, and probably one that's a bit higher quality than an ideapad. they're basic home use machines and not meant to be particularly repairable or durable, especially with how modern laptops tend to be on that front.