New GPU won't boot! Help!

Hi,
So I made a challenge for myself, to make a cheap but good performing PC. I got a Athlon X2 255 and motherboard for free, 80gb 7200rpm Seagate hdd for like $12 New Zealand Dollars and a GT 520 for $20 nzd. Also got a power supply from a friend who upgraded: It's a Cooler Master 400w, but I also have an Antec Earthwatts 430w 80 plus. The Cooler Master has 32A on the +12v rail while the Antec Earthwatts has two +12v rails, both with 17A.
I bought a HD 4870 really cheap, like $35 nzd. (PC parts are overpriced in NZ)
I bought a 6 pin adapter to two molex connectors for this upgrade. So when I put the 4870 in, with adapters plugged in, it wouldn't boot. It also went to 100% fan speed after 10 seconds which really startled me at first for how loud it is! (my first 'blower' gpu.)
I was wondering if someone could help me to boot. I saw a thread online that said you can use a 400w power supply with a 4870 as long as you have at least 18A on the 12v rail.
Please help, thanks in advance.
Reply to adampy
8 answers Last reply
More about gpu upgrade
  1. My monitor will go into power save mode every time.
    Reply to adampy
  2. You should have enough juice for it. Also, have you tried the card in another pc? Because it sounds like the card is faulty. Does the motherboard make any beeps and/or does the led on the mobo flash?

    It does boot without the card? It sounds like your graphics card is broken. Your monitor goes into power saving mode because it apparently does not get a signal from the card.

    Also, make sure it's not just the cable, if you boot in integrated graphics you do have a signal?
    And what you also can try, is using the other dvi port (this once worked for me).

    If those things don't work, I'm afraid the card might be dead.

    Good luck!


    I've had the same gpu before, it really is loud as f*ck :D
    Reply to Bakkie
  3. Bakkie said:
    You should have enough juice for it. Also, have you tried the card in another pc? Because it sounds like the card is faulty. Does the motherboard make any beeps and/or does the led on the mobo flash?

    It does boot without the card? It sounds like your graphics card is broken. Your monitor goes into power saving mode because it apparently does not get a signal from the card.

    Also, make sure it's not just the cable, if you boot in integrated graphics you do have a signal?
    And what you also can try, is using the other dvi port (this once worked for me).

    If those things don't work, I'm afraid the card might be dead.

    Good luck!


    I've had the same gpu before, it really is loud as f*ck :D


    Thanks so much for your reply, I have put my GT 520 back in and boots fine. My motherboard is a ASRock N68-S3 UCC and doesn't have a motherboard speaker.
    I think I may have found something, when it boots with the 4870 in, 1 of the 4 leds is on, red. It is on for both psus (I tested both). It is always on the one with the 6 pin psu connector, not the molex adapter.
    Also I can't boot without a graphics card, as the CPU does not have integrated graphics.

    Kinda sucks how I bought a 4870 when the seller said it works.
    I think another option I should take is to let one of my friends use it, that have a 500w+ psu and see if it works for them, if so it would probably be a psu issue.
    Reply to adampy
  4. I'll try the other DVI cable later as I need to sleep without waking the entire family up with the jet engine of the 4870 cooling xD
    Reply to adampy
  5. Well, good luck.
    I'll hear about it.
    Reply to Bakkie
  6. Bakkie said:
    Well, good luck.
    I'll hear about it.


    Nope, didn't work :(
    Reply to adampy
  7. adampy said:
    Bakkie said:
    Well, good luck.
    I'll hear about it.


    Nope, didn't work :(


    The card didn't work? So the card is dead? :(
    Reply to Bakkie
  8. Bakkie said:
    adampy said:
    Bakkie said:
    Well, good luck.
    I'll hear about it.


    Nope, didn't work :(


    The card didn't work? So the card is dead? :(


    Probably.
    Reply to adampy
Ask a new question Answer

Read More

Cooler Master Power Supplies AMD Antec ATI