New powersupply problem?

holzbaby · 10-04-2008, 12:59 AM

Hi

I am running vista. I just upgraded my older 350 watt power supply to a 550 watt psu, as well as upgraded my graphics card to a hd 4870.
Now when I start up my comp it goes to a black screen with a blinking underscore..

Have I not installed them correctly or what? Im pretty sure I installed the graphics card right, and im guessing maybe the power supply?

thanks..

Tumbleweed36 · 10-04-2008, 05:36 AM

With this video card, you should have purchased a qualty brand name 750 watt power supply like a Corsair 750. What power supply did you purchase (brand name) this time? 550 watts is just not enough.

holzbaby · 10-04-2008, 08:21 AM

its a BFG 550w. The card says it only requires 500 watts, and recommends 600 watts for for crossfire. So i figured 550 w would be enough..

holzbaby · 10-04-2008, 08:40 AM

Also, right before the black screen with the blinking cursor, is flashes "checking NVRAM" in the bottom left corner.

Tumbleweed36 · 10-04-2008, 11:16 AM

I am fairly certain that a BFG power supply (= poor quality) is not strong enough to pull that graphics card. YDo you know someone who has a decent larger power supply to put in there to try?

holzbaby · 10-04-2008, 11:38 AM

It can't be the graphics card, because it runs. When the graphics card does not have enough power it beeps. I had that problem a long time ago with anonther card, and recently with this card with my previous 350 watt. Now with the 550 watt, it doesn't beep and it runs. When i start up the comp, i get past the start up screen, and I get a black screen with a blinking cursor.

Do you know of any other possibitlities to why this is not working???

10-04-2008, 12:59 AM	#1 (permalink)
holzbaby Registered User Join Date: Oct 2008 Posts: 4 OS: Vista	New powersupply problem? Hi I am running vista. I just upgraded my older 350 watt power supply to a 550 watt psu, as well as upgraded my graphics card to a hd 4870. Now when I start up my comp it goes to a black screen with a blinking underscore.. Have I not installed them correctly or what? Im pretty sure I installed the graphics card right, and im guessing maybe the power supply? thanks..

10-04-2008, 05:36 AM	#2 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,658 OS: XP Professional	Re: New powersupply problem? With this video card, you should have purchased a qualty brand name 750 watt power supply like a Corsair 750. What power supply did you purchase (brand name) this time? 550 watts is just not enough. __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread.

10-04-2008, 08:21 AM	#3 (permalink)
holzbaby Registered User Join Date: Oct 2008 Posts: 4 OS: Vista	Re: New powersupply problem? its a BFG 550w. The card says it only requires 500 watts, and recommends 600 watts for for crossfire. So i figured 550 w would be enough..

10-04-2008, 08:40 AM	#4 (permalink)
holzbaby Registered User Join Date: Oct 2008 Posts: 4 OS: Vista	Re: New powersupply problem? Also, right before the black screen with the blinking cursor, is flashes "checking NVRAM" in the bottom left corner. Last edited by holzbaby; 10-04-2008 at 08:41 AM.

10-04-2008, 11:16 AM	#5 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,658 OS: XP Professional	Re: New powersupply problem? I am fairly certain that a BFG power supply (= poor quality) is not strong enough to pull that graphics card. YDo you know someone who has a decent larger power supply to put in there to try? __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread.

10-04-2008, 11:38 AM	#6 (permalink)
holzbaby Registered User Join Date: Oct 2008 Posts: 4 OS: Vista	Re: New powersupply problem? It can't be the graphics card, because it runs. When the graphics card does not have enough power it beeps. I had that problem a long time ago with anonther card, and recently with this card with my previous 350 watt. Now with the 550 watt, it doesn't beep and it runs. When i start up the comp, i get past the start up screen, and I get a black screen with a blinking cursor. Do you know of any other possibitlities to why this is not working???