Graphics card or Psu

[Alfred17]

i just bought a r7 260x and i have a 400w power supply when i put in my gpu the fans start spinning but i get no signal do you think it is the gpu or psu btw i know i have to upgrade my psu but im asking could it be the reason im getting no signal

 

[Dark Lord of Tech]

They do recommend a 450w to 500w PSU.

 

[Alfred17]

They do recommend a 450w to 500w PSU.

yeah i know but i figured since it had a 6 pin connector it would work

 

[Dark Lord of Tech]

Is this a prebuilt?

 

[Alfred17]

everything except the psu the old one died so i had to get another one

 

[Dark Lord of Tech]

Sometimes on prebuilts , they have trouble running the newer cards.

 

[Alfred17]

do you think i could take it to best buy and have them test it?

 

[Dark Lord of Tech]

That's up to you I'm sure they could.

 

[Alfred17]

do you think updating the motherboard bios may fix it

 

[cst1992]

How many amps does the 400W have?
I'm wary of running a 140W card on my CX430, which has 32A of current on the +12V rail.
If your PSU has less(which it supposedly does), then the 260X won't have enough power(115W).

 

[Alfred17]

the yellow colored wires say +12v1-8A so maybe the psu is the problem

 

[Alfred17]

also i dont think its 400w its says 300w output watts and 400w peak power

 

[Dark Lord of Tech]

I would upgrade to a sufficient power supply.

 

[cst1992]

Yes, if you have a budget and need to decide which one to get, you can post here. A 300W just doesn't cut it. The card itself gobbles up half that power, assuming the PSU even delivers 300W.
If you need suggestions, just ask.

 

[Dark Lord of Tech]

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($55.99 @ SuperBiiz)
Total: $55.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-10-07 14:08 EDT-0400

 

[cst1992]

Seems a bit overkill. I mean an additional $55 will get him a new card.
How about a Corsair CX430? I know the CX series is not for gaming PC's but I don't think the PSU is going to be taxed much.
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($44.99 @ Newegg)
Total: $44.99

 

[Alfred17]

im getting this http://www.amazon.com/EVGA-Continuous-Warranty-Supply-100-W1-0500-KR/dp/B00H33SFJU

 

[Dark Lord of Tech]

http://www.overclock.net/t/1500086/why-you-should-not-buy-an-evga-400-430-500-600-500b-600b
Why you should not buy an EVGA 400 / 430 / 500 / 600 / 500B / 600B

 

[Alfred17]

i already bought it

 

[Alfred17]

i found the problem all i had to do was disable secure boot and enable Launch CSM thx for your help heres the link for any future viewers https://www.evga.com/support/faq/afmviewfaq.aspx?faqid=59421