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Power problems

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by bstei18 1 view

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I've built a new machine with an MSI K7t266 Pro2 Motherboard, Athlon XP 1900+ with Cooler Master HS and 2 Crucial 256MB DDR mem modules. All other items are from a previous system that had an 800MHz Athlon (slot A). The problem is that the system runs fine at work were I assembled the system, but has problems at my home. The motherboard has LED's that indicate it stops at the "testing base and extended memory" part of the POST. I get no video either. The PS is only 4 months old from Antec and is rated at 400W. I've hooked the system to two different 500VA UPS's at home and even straight into different wall outlets. All BIOS and drivers are at the most current levels. I've even removed all cards but the video (GeForce2 GTS) and tried a low end PCI video card with no difference.

Any help would be appreciated.

9 replies

by james r linn

Just to clarify, are you taking the whole box back and forth including the power supply?

The only thing I can think of is some kind of interference in your power at home. Poor grounding can sometimes cause this - I have a TV which buzzes because of bad ground, and interference of this type can be passsed through your power supply.

I know you thought of that, since you tried through different UPSs. Not all UPSs do a good job of filtering power though, except from big spikes.

Did the PS come from the old system? I presume the old system ran great.

James

by geoffd72

Try reseating all your components...The move from the office to another location can loosen things, including the CPU. I agree with the dirty power theory though. Even the smallest amount of power flux can give you a tremendous amount of headache. Try using a multi-meter and test the power supply to the specs on this web page. http://www.1800destiny.com/tech/atxpsy.htm
You should only see a difference of +- 15 volts. Anything more than that and the problems are endless. Also check the volt switch on the PS, it could happen?..

by @lberto

I am pretty sure you have a power problem at home, you said you even used an UPS, sometimes it works, but sometimes it doesn't help.
Did you open your computer, make sure that your memory, cpu and video cards are properly attached to the board.
I still think is a power problem you've got there

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