pc fails to start with NVIDIA GTX970, functions properly with older graphics cards
pc fails to start with NVIDIA GTX970, functions properly with older graphics cards
I'm a total noob at this , so please be easy on me. So I wanted to upgrade my old pc from nvidia gefore 610 gt to the nvidia gtx 970. Once I removed the old card and installed the new card, plug both 6 pin cables into it, when I hit the on button, the light inside of it momentarily turns on for about half a second and then disappears and the pc doesn't even attempt to boot, there's no harddrive making a sound, nothing. If I try to turn it on again, the light won't go on and nothing happens. If I flip the power button (to the power supply) off and on then i can get the pc on button to do the same thing, but again, only once. No boot sequence, nothing. I removed the 970 and put the 610 back in and it works fine. I tried just having the 970 in the pcie slot with no power cables plugged into it, and the boot sequence recognizes new hardware (and I get to an american megatrends red screen that instructs me to hit f1. I usually have an asus screen since I have a asustek p8z77-v lx mother board.) My power supply is a corsair cx500 but the computer is from 2012. I'm running linux mint. What could be the issue? The 970 card, is a used card off ebay. Is the card bad? Thanks y'all.
It seems you're drawing excessive current from a single rail in the power supply, triggering its protection and causing shutdown. Most PSUs feature several 12V output paths; overloading any one will lead to failure. Consider using a different 6-pin PCIe connector from the PSU and another from a separate "Molex" circuit (see Adapter link). This should resolve the issue. Option 2 is to replace the PSU entirely.
The calculations don’t match up. A GPU doesn’t consume much power during the posting sequence, which shouldn’t cause such issues. Also, most PSUs feature a single 12V rail, particularly at lower wattage levels. It seems your card probably has a shorted power rail. That’s likely the problem.
I update my earlier remote diagnosis and align with Levent’s view. It seems your GTX970 likely has an open short and is malfunctioning. The PSU is noticing this and taking protective measures instead of failing catastrophically. If you had a spare, replacing it could confirm whether the issue lies with the card or the PSU connections.