Because, as we have seen here, we cannot assume anything - including the equipment used, the poster's experience, skillset or technical knowledge -
or their communication skills , I am not going to assume I know what you mean by "same as".
So I have to ask for clarification, does "same as" mean when you put this card in the 2nd computer, that the PSU was a different RM850 PSU? Or wast it the exact same RM850 that was in the first computer? That is, have you verified the RM850 in the computer listed in your system specs is good by swapping in a second known good PSU?
If you have the same problem with two different power supplies too, then I stand by the answer I did, indeed already provide; you need to shop for a new card.
If you used the exact same PSU in the 2nd PC, then you need to verify good power first by swapping in a 2nd, properly sized, and known good PSU before investing in a new graphics card.
And FTR, I also stand by what I said about heat guns. You sure would
NOT use them for, as you say, "
heating up the caps,chips" for that indeed would be a stupid idea! The right tool in the hands of a properly trained and skilled technician would be used for heating up the
leads (solder connection) to those components. Heating up capacitors and especially ICs (chips) with a heat gun would surely lead to component damage.
So before getting all riled up, let's make sure you are communicating your problem properly so we don't have to make potentially faulty assumptions about what you mean, okay?