Question about MSI MBOX KM4M-L (ms-6734bb-040) Barebone

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No power turn on but nothing happens power supply tested good

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Did you do any changes to your computer power pins?
did you connect all the needed wires to your motherboard?

Posted on Jan 31, 2009


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Laptop will not turn on

With a very limited problem description, not sure how to help, but here are a few ideas.

If the machine gives a few beeps, or any lights come on temporarily, then nothing, it could be a flaky power supply, or worse case your BIOS is hosed. Power supplies are not cheap, so go buy a cheap vote meter at Harbor Freight for about $5 and test it 1st. If your BIOS is hosed, it requires replacing the BIOS ROM chip on the mother board. If you get a few beeps and some screen flashing, it could be the hard drive, although not likely. You should get some sort of "can not locate OS" error message in that case. Could also be bad RAM memory (your replaceable DDR board(s)), which will give you a couple of beeps and then halt. A last possibility is the display has gone bad or became disconnected.

If nothing happens at all (no beeps, no lights, no nothing), it could also be the power supply and the battery is now totally dead. Or the connection for the power supply, or the battery is hosed and will take no charge at all. Some laptops will run with just a power supply, some require a working battery. Again, you can test the battery with a volt meter. Not an actual battery load test, but at least see if it is producing any voltage at all.

Good luck.

Aug 03, 2014 | Compaq Computers & Internet

1 Answer

My motherboard is dead replaced power supply still nothing

you may got a power spike if so board bad look at the board the caps are they round or flat if rounded on top bad board

Jan 13, 2013 | HEWLETT-PACKARD Hewlett Packard GV34469001...

1 Answer

Laptop will not turn on. Even with the power cord nothing happens?

Good Day,

When you say nothing happen I will assume that no lights, no sounds or 100% no initialization is made by the computer when switching ON..

Check the POWER SUPPLY only power supply can be the cause of this..else you got your self a motherboard problem.

Jun 12, 2011 | Acer Computers & Internet

2 Answers

Installed the power supply. Everything is plugged in fine, that I can tell of. I turn on the box, with it plugged into the wall, and hear the normal sound of electricity. I push the power button on my...

check for the fuse on the device or, if the cord has any internal damage in case of plastic moulded plug,there could be internal wiring issue try swapping the cables

Mar 03, 2011 | LogiSys (PS550ABK) 550-Watt Power Supply

1 Answer

How do I test whether power supply is OK? My unit does not turn on.

To test the system turn it on and plug in a USB device, if it operates you power supply is ok, if nothing happens then most likely the battery is dead not getting charged or is defective, is this what you are asking? if not please let me know

Dec 01, 2010 | Toshiba Qosmio G35-AV600 Notebook

2 Answers

My ga-ma785gm-us2h won't turn on, no power or nothing. I hit the power switch on the front of the case but nothing happens no fans spin or anything.

check the power supply is working properly, if the power supply is connected to the mother board and also check the front panel switch is connected to the board

Jan 16, 2010 | Gigabyte GA-MA785GM-US2H Motherboard

1 Answer

The red lite goes off when you power the unit up...but stays black....nothing happens....have pluged and unplugged several difference

Good day sir, hi, as I see it, the red light is on stand by, and turning on the TV nothing happens, This could be traced from a failure of the power supply board to the mainboard. This diagnostics should be done by a qualified service personnel and should not be performed by a novice. The process is to locate the problem board, first replace the power supply board, then test, if the board respond then good, but if not, replace the main board which controls the sound, LCD, controls and the likes. replacing the two boards are costly, so I suggest you take it to your dealer for proper advice on your TV. if its under warranty, much better. they will replace the entire tv.

Nov 18, 2009 | TruTech PLV16320 Television

1 Answer

Tv will not turn on the remote control will not work

check first the batteries of remote control maybe weak or empty charge. if nothing happen even the remote is good check the ac fuse on power supply section for busted test.

Jul 31, 2009 | Televison & Video

2 Answers

Starter issues

I would first verify battery power, Once you have proper power there, either via a good trickle charger or battery replacement, I would check the fuseable links mounted right at the "hot" side of the starter. Just follow the 4 gauge wire from the battery to the 15mm/13mm nut on the starter. Make sure you have power to both sides of the wire with a test light. THis is the only wire that supplies the power for the relay fuse box. So either your not making power, or the power isn't reaching this box. Let me know how you make out.

Jul 12, 2008 | 1996 Pontiac Sunfire

1 Answer

Testing a power supply

Most commonly it is the power supply. Rarely it is the motherboard when it just stops working with no other signs. You can take a power supply from another computer and test but I bet it is definitely the power supply. You can purchase a power supply tester for around $20 or so but you can get a power supply for not much more than that and test it that way.

Jun 19, 2007 | Antec SL400 (761345254007) 400-Watt Power...

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