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ASUS Support Home Location : Forum > Motherboard > M3N78 Pro  
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  Topic : [Problem]asus m3n78 pro problems New Topic
Paul
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Posts : 3
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Tech Points : 1
From: Australia
Posted:4/5/2009 4:14:00 PM # 1
Hello i have a m3n78 pro with an amb phenom quad core 9950 black edition with 4 2gb sticks of ddr2 800 ram and a geforce 9600gt 512 mb video card 1000w power supply 2 500gb hdds and 1 1tb hdd all sata in spaned config my problem is sometimes when i turn my computer on i get no video and no beep it happens with or with out the video card i did a ram test with no problems found i have the latest bios. before i had a 1000w psu i had a 550w psu the system was always overheating evan when room temp was 12 degress celcuius one temp sencor was detected at 127c and my system would shut off when my computer comes out of standby the power light will still flash untill i unplug the psu and plug it in agian and that is the same as with the boot problem i have to unplug the psu and plug it in agian for the system to boot and now just over the past day or 2 my computer locks up when i enter the bios. any idea's on what the problem is?? i will be greatfull for any help.

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csj
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From: Canada
Posted:4/5/2009 10:28:00 PM # 2
A 1000w power supply is way beyond overkill for a system configured like that, it would run fine on a decent 450w unit.  Any particular reason for a PSU of that wattage?

Is this a new built system that's been giving you problems from the start, or is it just starting to give you problems now?

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M4A78T-E, Phenom II X3 720BE Running 4-Cores @ 3.4GHz, Scythe Kama Angle, XFX Geforce GTX275, 4GB Kingston HyperX PC3-12800 RAM, Antec Twelve Hundred Case, OCZ GameXStream 600W PSU, SB X-Fi Titanium Fatal1ty Pro, Windows7 Ultimate 64-bit: M3N78-Pro, Athlon X2 5400+ @3.0GHz, 4GB Mushkin HP2-6400 RAM, eVGA GeForce 9800GT SC Edition, Antec Plus1080AMG Case, Antec 430W Tru-Power Trio, SB Audigy2 ZS Platinum Pro, Windows7 Ultimate 64-bit
Paul
Member
Posts : 3
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Tech Points : 1
From: Australia
Posted:4/6/2009 4:52:00 AM # 3
Well I am putting a few more hard drive's in so i need all the power i can get and i also saw in the user guide that the minumin psu watt is recomended at 600w.

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Paul
Member
Posts : 3
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Tech Points : 1
From: Australia
Posted:4/6/2009 5:22:00 AM # 4
the problems started only a few days after i built my computer

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csj
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Tech Points : 332
From: Canada
Posted:4/6/2009 7:20:00 AM # 5
Go here for a good power supply calculator: http://www.antec.outervision.com/
Bookmark that for the next time you're in the market for a power supply. 

I ran this system configured originally with a 430W Antec power supply which was sufficient:
M3N78-Pro
Athlon X2 5400+
4x 1GB Mushkin DDR2 800
eVGA GeForce 9800GT Superclocked Edition
Antec Twelve Hundred gamers case (6x 120MM blue LED fans, 1x 200MM LED fan)
2x Seagate Barracuda 7200.11 500GB SATA HDD's
Maxtor 200GB IDE HDD
LG 20x20 Lightscribe IDE DVD Burner
Sound Blaster Audigy 2ZS Platinum Pro sound card with external module (one of the most power hungry cards on the market)
Running off USB ports connected to the PC:
Wacom Intuos II 9x12 Tablet
MS Wireless Keyboard
Logitech Trackman (wired)
Logitech Wireless Trackman (wireless)
USB Hub built in my Samsung T240 LCD
I also plug in my ZEN MP3 player and sometimes my Motorola cell phone to recharge them or swap files etc.

I've since put the 430W power supply into one of my older computer systems to get it back up and running, so I replaced it with a 600w OCZ GameXStream unit.
The rest of the system is still the same except the two IDE devices are gone, the burner replaced with an LG SATA 22x lightscribe unit and I have an additional 1TB Western Digital SATA drive installed.  I'm not even CLOSE to using near the 600w capacity of my PSU.

The only time you'd ever need anywhere near a 1000w power supply would be if you were running something like 4x Radeon HD 4870x2 video cards in crossfire. 

Anyway, if the system was OK at the start, there's a possibility that something in there could be damaged.  Couple of steps to try first: remove all memory except for one module.  Also remove all add on cards including video, sound etc.  Run off the built in video.  Try removing and reinstalling the CPU as well as check all power connections to all devices, make sure they're all securely seated.

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M4A78T-E, Phenom II X3 720BE Running 4-Cores @ 3.4GHz, Scythe Kama Angle, XFX Geforce GTX275, 4GB Kingston HyperX PC3-12800 RAM, Antec Twelve Hundred Case, OCZ GameXStream 600W PSU, SB X-Fi Titanium Fatal1ty Pro, Windows7 Ultimate 64-bit: M3N78-Pro, Athlon X2 5400+ @3.0GHz, 4GB Mushkin HP2-6400 RAM, eVGA GeForce 9800GT SC Edition, Antec Plus1080AMG Case, Antec 430W Tru-Power Trio, SB Audigy2 ZS Platinum Pro, Windows7 Ultimate 64-bit
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