So I go to turn my desktop on today and realize it wont start. I had just used it about a week ago. PSU was hot and smelled just a touch funky. 500 watt LS ultra. I took it out and put in a shitty 300w one from a gateway computer i had laying around. Fans spin up, hard drives spin, but no video output. The motherboard has onboard graphics, in addition to my graphics card. I have tried booting the computer on integrated graphics WITH and WITHOUT the card in, and I have tried booting on the graphics card with all other loads, such as extra fans and CD player disconnected from the current 300 watt power supply.
Any ideas what could be going on? I am going to explore the possibility of the HDMI cable being total shit tomorrow and try a VGA cable, but it works with other devices so I don't think thats it. Another possibility I was thinking is that the power supply doesn't have the capacity to even boot the computer and put out graphics, but I highly doubt that
Specs are
foxconn a7gm-s 2.0 motherboard
radeon 4850 graphics card
phenom 955 processor
300 Watts is simply not enough.
Graphics Card needs a lot more power
[QUOTE=Scratch.;48008901]Graphics Card needs a lot more power[/QUOTE]
That's definately what I was thinking. But like i mentioned, I tried booting without the card in with the integrated graphics and nothing came up.
Or It could be that the PSU does not have the 4 pin connector for the extra CPU power
[QUOTE=Indictus;48008919]Or It could be that the PSU does not have the 4 pin connector for the extra CPU power[/QUOTE]
nope, has it
[editline]20th June 2015[/editline]
[QUOTE=gerbile3;48008946]nope, has it[/QUOTE]
Evey required connector for the motherboard is there.
[QUOTE=gerbile3;48008946]nope, has it
[editline]20th June 2015[/editline]
Evey required connector for the motherboard is there.[/QUOTE]
Well More watts is needed since AMD CPU's are huge power hogs.
[QUOTE=Indictus;48008961]Well More watts is needed since AMD CPU's are huge power hogs.[/QUOTE]
According to part picker, the CPU requires 125W
Can't find the power usage for the motherboard though
Maybe the PSU simply isn't even 300W, cheap PSUs usually are very optimistic in their ratings.
You're going to want to get a better psu before it does harm to the rest of your parts.
Sure there isn't some damage done to other parts already?
[QUOTE=redBadger;48010415]You're going to want to get a better psu before it does harm to the rest of your parts.[/QUOTE]
Well yeah, but I would rather not throw a brand new power supply in a computer that needs half the parts replaced
[editline]20th June 2015[/editline]
[QUOTE=Bat-shit;48011883]Sure there isn't some damage done to other parts already?[/QUOTE]
nope. not sure at all. that's another possibility i was thinking about. I may try booting a cd copy of ubuntu on a cd on an older computer to see if the hard drives and cd drive work okay
[editline]20th June 2015[/editline]
HDMI cable isn't at fault. computer is completely stripped down to powering just the motherboard/cpu and still doesnt turn on
[editline]20th June 2015[/editline]
as of right now, im going to assume the PSU is not enough to get the computer started. the hard drives appear to spin up no problem. I was thinking of picking up [url=http://www.newegg.com/Product/Product.aspx?Item=N82E16817139051&cm_re=corsair_power_supply-_-17-139-051-_-Product]this[/url]. I think this gives me enough to throw a new graphics card in like i would like to, and allow for future expansion
[QUOTE=Scratch.;48008901]Graphics Card needs a lot more power[/QUOTE]
You guys honestly have no idea, cards today require way more power than back when the 4850 was released. He should expect around 250W at load. And it isn't like the BIOS automatically runs Furmark at boot.
If the 300W PSU isn't total shit (it probably is) he should have no problems with regards to power.
Since the computer isn't even booting without the GPU, I'd put my money on something else being broken (as well). I don't know that much about PSUs, but I'd assume a PSU totally out of spec (voltage wise) could be the cause of this.
If you can, try a PSU that you know functions. Boot with nothing but the essentials (motherboard, CPU, RAM) and check the individual sticks of RAM - reseat them both for good measure. Try clearing the CMOS as well. If you can, connect [url=http://images17.newegg.com/is/image/newegg/12-201-032-TS?$S300W]one of these[/url] and get the motherboard POST codes.
Either way I'd probably put my money on the motherboard or PSU being broken.
[editline]21st June 2015[/editline]
[QUOTE=gerbile3;48013614]Well yeah, but I would rather not throw a brand new power supply in a computer that needs half the parts replaced
[editline]20th June 2015[/editline]
nope. not sure at all. that's another possibility i was thinking about. I may try booting a cd copy of ubuntu on a cd on an older computer to see if the hard drives and cd drive work okay
[editline]20th June 2015[/editline]
HDMI cable isn't at fault. computer is completely stripped down to powering just the motherboard/cpu and still doesnt turn on
[editline]20th June 2015[/editline]
as of right now, im going to assume the PSU is not enough to get the computer started. the hard drives appear to spin up no problem. I was thinking of picking up [url=http://www.newegg.com/Product/Product.aspx?Item=N82E16817139051&cm_re=corsair_power_supply-_-17-139-051-_-Product]this[/url]. I think this gives me enough to throw a new graphics card in like i would like to, and allow for future expansion[/QUOTE]
Don't waste $80 on something that *might* revive this monster - the long and short of it is that your hardware isn't worth it (and 750W is ridiculously overkill). Don't buy new parts just to diagnose this computer.
what do you suggest he should do?
maybe salvage the hard drive, it might still work at least. But to me, it sounds like the CPU and Mobo are dead..
Do you have a speaker or anything plugged into the mobo? Even if we remove the external video card and drives and just leave the board with CPU and ram you should get a POST beep. If you're not getting that then you have bigger problems.
[QUOTE=Bat-shit;48024746]what do you suggest he should do?
maybe salvage the hard drive, it might still work at least. But to me, it sounds like the CPU and Mobo are dead..[/QUOTE]
To be honest if he can't find cheap replacement hardware, I'd just do a "new" (salvage parts, get some on craigslist or whatever) build. I don't think it's necessarily a bad idea to buy a PSU he can also use for a new build, but then he shouldn't go 750W - he won't need it.
Chances are the mobo is fried, which is why I recommended connecting a mobo speaker.
[QUOTE=GoDong-DK;48020805]You guys honestly have no idea, cards today require way more power than back when the 4850 was released. He should expect around 250W at load. And it isn't like the BIOS automatically runs Furmark at boot.
If the 300W PSU isn't total shit (it probably is) he should have no problems with regards to power.
Since the computer isn't even booting without the GPU, I'd put my money on something else being broken (as well). I don't know that much about PSUs, but I'd assume a PSU totally out of spec (voltage wise) could be the cause of this.
If you can, try a PSU that you know functions. Boot with nothing but the essentials (motherboard, CPU, RAM) and check the individual sticks of RAM - reseat them both for good measure. Try clearing the CMOS as well. If you can, connect [url=http://images17.newegg.com/is/image/newegg/12-201-032-TS?$S300W]one of these[/url] and get the motherboard POST codes.
Either way I'd probably put my money on the motherboard or PSU being broken.
[editline]21st June 2015[/editline]
Don't waste $80 on something that *might* revive this monster - the long and short of it is that your hardware isn't worth it (and 750W is ridiculously overkill). Don't buy new parts just to diagnose this computer.[/QUOTE]
ugh if the mobo is dead i mine as well just call the computer dead for the next year or so
[QUOTE=gerbile3;48287348]ugh if the mobo is dead i mine as well just call the computer dead for the next year or so[/QUOTE]
Why?
The motherboard can be replaced for $50
[url]http://www.amazon.com/M3N78-VM-Nvidia-DDR2-1066-Geforce-Motherboard/dp/B001BL7262/[/url]
Sorry to resurrect a very old thread, but the problem was ONLY the power supply. All I had to do was install a new one and remove my CMOS batterry for 5 minutes (and toss out a stick of bad ram which I tried using from a different computer) and the computer now runs fine. No problems at all.
My PSU exploded once
[QUOTE=gerbile3;49264528]Sorry to resurrect a very old thread, but the problem was ONLY the power supply. All I had to do was install a new one and remove my CMOS batterry for 5 minutes (and toss out a stick of bad ram which I tried using from a different computer) and the computer now runs fine. No problems at all.[/QUOTE]
Nice, which PSU did you get?
[QUOTE=GoDong-DK;49265166]Nice, which PSU did you get?[/QUOTE]
It was a shitty 520W that I got from a family's custom built gaming PC because I only had an Antec 450w at the time. (I swapped them out.) It exploded a couple minutes into GTA V. This was with an R9 390 before I returned it and got a GTX 980 (was gonna get 970 but saw 980 on sale). Go AMD. lol
I have an Antec 850w Pro High Current Gamer now. Complete overkill but it lets me overclock everything (and I'm ready for next-gen so I pretty much don't need to upgrade my PSU for the next 1000 years) Antec is great btw
[QUOTE=Scratch.;48009066]According to part picker, the CPU requires 125W
Can't find the power usage for the motherboard though[/QUOTE]
It requires 125w, but under full load they can draw 250w. Even the old Phenoms draw about 230w under load. This is if you have an AMD of course. 300w PSU isn't going to be enough in a rig built within the last 4 years I wouldn't think, not even the most power efficient build, especially from some off brand storebought Gateway the PSU was taken from
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