For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
So it now always boots?
If fans spin high, can be thermal sensor issue.
Could be also an effect of not recognized battery.
Run HWMonitor and check for strange temps reported.
You can also start in diagnostic mode.
Check what happens disconnecting webcam.
PLEASE, do NOT write an entire message in capital letters; is more difficult to read it.
We will appreciate if you use punctuation signs also.
You can also use normal quotes "" for partially references ; looks better, doesn't charge the post...
"Could be also an effect of not recognized battery."
You should try known good battery.
Seems no temp sensors issue, if no strange values reported.
But nothing to lose disconnecting internal LCD and testing with external monitor; if you cannot locate camera connector (on the LCD assembly).