Causes of a bad 12 volt line?

alamarmalomar · 10-21-2008, 03:15 PM

I recently purchased a Dynapower 500W power supply from Newegg. Yeah, it was $19.99, but it had pretty much rave reviews and I thought it'd be good to try it out.

Well, I basically went from 11.40 - 11.50 V on my old PSU to 11.20 - 11.35 V on this new one.

What makes a 12 volt line faulty? How can I correct this or how can I troubleshoot it?

**Jtsou** · 10-21-2008, 03:36 PM

the quality of the psu.

You cannot correct it, i doubt it is fixable.

You should invest in a quality psu.

dai · 10-21-2008, 03:50 PM

what are you running
video card
cpu
m/board
ram
power supply
brand
wattage

where are you getting the voltage reading from the bios?

alamarmalomar · 10-21-2008, 04:50 PM

Video card: AGP Radeon X850XT
CPU: AMD Athlon XP 3200+
Motherboard: Asus A7V8X-LA (Kelut)
RAM: 2 x 512 MB PC2700 don't remember the exact brand
Power supply: DYNAPOWER USA EP-50X.C563-BX, 500 watts

Nah, I use EVEREST Ultimate Edition to read my stuff. Would the BIOS give me a better reading?

dai · 10-21-2008, 05:00 PM

the bios is the most reliable for accuracy
can you test the psu with a multi meter you don't have a power hungry system so new you would expect it to be closer to 12v than you are seeing

alamarmalomar · 10-21-2008, 08:02 PM

I can't figure out how to find the voltage setting in the BIOS...what key do I hit? On bootup (I have a Compaq) it says F1 = Setup and Esc = Boot Menu, but I can't find it in boot menu or set up...

Also, I remembered I had a wireless adapter (Linksys WMPG54, if I recall) and a TV Tuner card in my computer. Would removing those help out my power supply problem? The main problem is that whenever I boot up modern-day games like WoW, my computer will restart and on occasion, it will beep and nothing will boot up, even if it's powered on, and after a bit it goes back to normal.

dai · 10-21-2008, 10:04 PM

F1 or delete one of the post screens will say which key

10-21-2008, 03:15 PM	#1 (permalink)
alamarmalomar Registered User Join Date: Sep 2008 Posts: 7 OS: Win XP SP2	Causes of a bad 12 volt line? I recently purchased a Dynapower 500W power supply from Newegg. Yeah, it was $19.99, but it had pretty much rave reviews and I thought it'd be good to try it out. Well, I basically went from 11.40 - 11.50 V on my old PSU to 11.20 - 11.35 V on this new one. What makes a 12 volt line faulty? How can I correct this or how can I troubleshoot it?

10-21-2008, 03:36 PM	#2 (permalink)
Jtsou Hardware Specialist Join Date: Jul 2007 Location: Louisburg, NC Posts: 1,214 OS: Vista Home Premium SP1 My System	Re: Causes of a bad 12 volt line? the quality of the psu. You cannot correct it, i doubt it is fixable. You should invest in a quality psu. __________________ CPU-Z-----GPU-Z-----CoreTemp-----Speedfan

10-21-2008, 03:50 PM	#3 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,546 OS: win 7 32x 64x rtm	Re: Causes of a bad 12 volt line? what are you running video card cpu m/board ram power supply brand wattage where are you getting the voltage reading from the bios? __________________

10-21-2008, 04:50 PM	#4 (permalink)
alamarmalomar Registered User Join Date: Sep 2008 Posts: 7 OS: Win XP SP2	Re: Causes of a bad 12 volt line? Video card: AGP Radeon X850XT CPU: AMD Athlon XP 3200+ Motherboard: Asus A7V8X-LA (Kelut) RAM: 2 x 512 MB PC2700 don't remember the exact brand Power supply: DYNAPOWER USA EP-50X.C563-BX, 500 watts Nah, I use EVEREST Ultimate Edition to read my stuff. Would the BIOS give me a better reading?

10-21-2008, 05:00 PM	#5 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,546 OS: win 7 32x 64x rtm	Re: Causes of a bad 12 volt line? the bios is the most reliable for accuracy can you test the psu with a multi meter you don't have a power hungry system so new you would expect it to be closer to 12v than you are seeing __________________

10-21-2008, 08:02 PM	#6 (permalink)
alamarmalomar Registered User Join Date: Sep 2008 Posts: 7 OS: Win XP SP2	Re: Causes of a bad 12 volt line? I can't figure out how to find the voltage setting in the BIOS...what key do I hit? On bootup (I have a Compaq) it says F1 = Setup and Esc = Boot Menu, but I can't find it in boot menu or set up... Also, I remembered I had a wireless adapter (Linksys WMPG54, if I recall) and a TV Tuner card in my computer. Would removing those help out my power supply problem? The main problem is that whenever I boot up modern-day games like WoW, my computer will restart and on occasion, it will beep and nothing will boot up, even if it's powered on, and after a bit it goes back to normal.

10-21-2008, 10:04 PM	#7 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,546 OS: win 7 32x 64x rtm	Re: Causes of a bad 12 volt line? F1 or delete one of the post screens will say which key __________________