Freezes and BSODs on external power - Lenovo Yoga 720-15IKB

[Tarzan1009]

Hi,

I have a problem with my Lenovo laptop - it freezes and BSODs but only on external power - on battery everything is ok. BSOD have bug code 239 - CRITICAL_PROCESS_DIED. It also seems that it's better when I put it in lower power plan in windows. I tried windows recovery twice, updated like all the drivers and sometimes it seems to get better but then it goes back to crashing again. I think it might be a hardware problem, but the question is - could it be just a foulty power supply? It would be good because I really don't want to lose my laptop. And if so, could I check with another power suppy with lower power? The one provided is 135W but I don't have access to another exactly like this. I can have one that is 90W (same voltage) though.

Laptop Specification:

i5 7300HQ

8GB DDR4

GTX1050 2GB

256GB M.2 SSD

Power supply - 20V 6.75A

Thanks for your help.