Member Avatar for Fred70

Have built a new PC. Refuses to boot up at all with Asus GTX 650 grpaphics card, but will boot up just fine with a Nvidia GT 320 graphics card.

Have installed drivers etc., still nothing: won't even boot to BIOS.

Card dead?

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  • Latest Post Latest Post by stu223

Dani AI

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Brief, practical checklist to isolate whether the GTX 650 is DOA or the system is at fault — tying back to points from and and adding concrete tests and evidence to collect for support/RMA.

  • Physical and simple isolation checks: reseat the card, try any other PCIe x16 slot if available, inspect the board for visible damage or burn marks, and confirm fans/light activity when the PSU is on. Remove everything non-essential (one stick of RAM, no drives) and try to POST with just CPU, GPU and PSU connected.

  • Power-cable and PSU verification: swap the GPU power lead with a different lead from the same PSU or a known-good PSU (modular cables can fail). If possible, test the card in another working PC or test a known-good card in this PC — that single swap is the fastest way to tell if the card itself is dead.

  • Motherboard/BIOS checks without re-imaging: clear CMOS to restore default video/init settings, and check motherboard debug LEDs or speaker beep codes for POST status. If the board shows a specific code with the GTX 650 installed, note it down — it is useful when contacting support.

  • How to prove-or-disprove for RMA: if the card exhibits no fans/spin/lights in multiple systems and with a known-good PSU, treat it as DOA. Document tests (photos/video of test bench, PSU used, whether card powered or not). If the card does power but system still won’t POST, collect motherboard debug codes, BIOS version, and results of the minimal-boot test before contacting vendor.

Helpful tools and references: GPU-Z to inspect enumeration once you can boot Windows (GPU-Z); a PSU calculator to estimate system draw (); and a CMOS-reset guide if unsure how to clear BIOS settings ().

If tests point to power delivery or motherboard incompatibility, swap to a reliable spare PSU and retest; if the card fails across systems and PSUs, proceed with RMA using the documentation above.

Recommended Answers

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Member Avatar for Rik_

The Asus GTX 650 requires the 6 pin power connector. Have you fitted it?

Member Avatar for rubberman

What RIK said. Most such issues are power-supply related. Either you aren't feeding the card the right power (and in the proper amperages), or your power supply is inadequate.

Member Avatar for Fred70

Thanks guys. Yes, I have plugged in the 6 pin power connector. I suspect the power issue is right, though. I have a Thermaltake PSU 500w. Should be enough? Maybe not?

Member Avatar for Rik_

That card requires 150watts according to it's specs so I suspect you may need a 650watt or higher.

Member Avatar for stu223

i had the same prob update your bios went from f8 to f15c and now i got an nivida gt640 and a gigabyte gt650 in the same machine and it fucken hammers

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