Good day Experts
I have a lenovo Legion pro 5 16ACH6H with AMD RYZEN 7 5800H and RTX3070,.

A weird issue has troubled me. If i power on off the laptop 20 times then only power LED will lit but no fan spin no display. At this stage gpu, vram. DDR voltage. 5v 3.3v 1.8v and the rest are present and cpu core is stuck at 0.84v.

And sometimes lets say the 21st time it will boot perfectly and there is image and everything is working perfectly and at this stage i see cpu core voltage is floating between1.15v and 1.34v.

and if i power it down and power on again then i have the same issue and it takes 20, 30 times ON Off cycle until it will start as normal..

Out of curiosity i reballed the cpu but its still the same. I replaced cpu core pwm IC no effect.

Any help is much appreciated.

Kind regards..

Just try to reball CPU and all will work fine. Tested this method on 12 Legion 5 motherboard like NM-D601, NM-D562, NM-D281 and other, and always it was the solution of this problem, if you can't do this (dosn't have BGA reball machine or other), write to me in PV.