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Power supply fried computer

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#1 Supernaut88


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Posted 09 July 2012 - 04:09 AM

New to this forum here and I'll make an effort to keep it brief.
The other day my generic optimax 450w power supply went up in flames. Sparks shot out the back like something from a movie. It was quite impressive. I figured, ok need new power supply, no problem. I picked up and installed a 500w Corsair unit that makes the old one look like it was built by 8 year olds at gun point.

I got it all in and rigged up with a smile on my face to find that... well not much of anything. The fans on the power supply, cpu, and video card run, an led lights up on the main bored but nothing else happens. I unplugged and plugged all components back in thinking I could have missed something and got the same result.

I'm guessing something beyond that old power supply fried, but I would like some advice to make a probable confirmation of this. I'm hoping maybe there is a reliable way to single out the problem. I tried to work out out logically. Fans run, led on main board gets power. Hard drive does absolutely nothing... but I might expect that if the CPU is gone. Also, the power swith on the front of the case will turn the unit on but you can not use that to turn everything off using the normal "hold in for x seconds." Lights on the front of the case do not light up, they're wired to main board. DVD burner does nothing, I can't even open the drawer with the button. I'm not sure if it requires some kind of data feed to make that happen or not. Also there is no signal at all going out to the monitor. Nothing looks physically damaged or burnt.

So I'm not a computer tech but not a complete novice either, I've swapped parts now and then and such. Unless someone has an explaination that I'm missing, I'm going to guess that the main board and/or CPU are shot. I suppose there could be more damage but I don't really know.

Now I am way out of the loop on computer hardware. I haven't really followed along since I bought my rig at the end of 2007. I know there is no point in dumping a ton of money into an old machine. However If I can get away with just a main board and Cpu for a few hundred bucks it might be worth it for a couple years service. I do a little gaming but I don't have to play the latest and greatest. I'm happy with what was late and great a few years ago considering what little gaming time I have, and time also spend on the xbox 360.

I'll just throw my existing specs.
Corsair CX500 Power Supply
Motherboard: ASUS M2A-VM HDMI
CPU: AMD 64 X2 Dual-Core (I think it was 3.3ghz)
Video Card: Geforce 9600 GSO
RAM: Kingston KVR667D2N5/1G (1gb X 2 sticks)
500GB hard drive.

I have questions about combatibility. I run Windows XP out of cheapness and stuborness. Does modern hardware have any issues running that?

My Geforce 9600 may be a bit antiquated but serves very well for my purposes, Beautifully running Silent Hunter 4 at the time of the great explosion. Could that card run into issues with newer hardware?

My RAM is probably pitiful. Is it worth using any longer or is an upgrade with that pretty well mandintory?

In better times I might say screw it and buy an all new computer. But its hurtin' times with shaky employment here. Unless I could have done something wrong causing the non running issue and my old machine is not screwed after all.
Advice is appreciated.

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#2 the_patriot11


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Posted 09 July 2012 - 06:54 PM

Unfortunatly, when a PSU goes out, it has the potential of frying every single component in the system, and guessing from what you describe, you had a doosey. With that being said, the components most likely to fry are the motherboard and video card (if it has its own power feed) since they draw the most power, and theres a good chance you have several good components. Unfortunatly, with that being said, if you can't get it to boot, then running any kind of software diagnostics are out of the question, you will need another computer handy to pull out any component and test them manually in another system. Dont try anything that has obvious damage, such as scorch marks.



Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

If I don't reply within 24 hours of your reply, feel free to send me a pm.

#3 S3cS3arch3r


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Posted 10 July 2012 - 07:44 PM

I would disconnect as much as possible needed for a POST (the first black screen).

Thus, disconnect all cables to all drives, disconnect all PCI cards, remove 1 RAM stick, and even the GPU (video card) as you have a graphical chip on your MoBo.
If possible, eliminate fried RAM with another system, or at least try both individually.

Essentially, only a bare MoBo with only a screen connected and a CPU + 1 RAM-bank should turn on.
If it doesn't beep at all, well, that's usually not a good sign, sorry.

And here's the ASUS troubleshoot page for your specific board:

Good luck!


EDIT: Your MoBo is made for Windows XP, no issues there, and no hard drive is needed to get into BIOS.

Edited by S3cS3arch3r, 10 July 2012 - 07:45 PM.

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