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Fans is on no beep no display HELP!

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January 21, 2011 7:49:45 AM

after i switch on my power supply what happen is the fan is case fan spin, heatsink spin, no beeps at all no display!!

i have trouble shoot
1. 2 ram in diffrent slot and without ram still no display

2. tried 2 graphic card and motherboard itergrat card i think to 2 monitor plus hdmi no display

3. tried 2 diffrent psu nope..

4. i tried this graphic card 5700 and the fan spin so loud! and nope..

5. PLS HELP!~!

More about : fans beep display

January 21, 2011 7:55:07 AM

shukor14 said:
after i switch on my power supply what happen is the fan is case fan spin, heatsink spin, no beeps at all no display!!

i have trouble shoot
1. 2 ram in diffrent slot and without ram still no display

2. tried 2 graphic card and motherboard itergrat card i think to 2 monitor plus hdmi no display

3. tried 2 diffrent psu nope..

4. i tried this graphic card 5700 and the fan spin so loud! and nope..

5. PLS HELP!~!



here my pc spec

processor 2.8ghz dualcore 5500
motherboard:Msi G41m4
ram: kingston 1gb 2gb ddr2
graphic card :5700ati

problem happens after i rebuild back my cpu what i did i plug out heatsink and put it back and change case fan to 1 fan

my psu connection is 4 pin and 12 pin to the motherboard
and heatsink to motherboard pin and case fan motherboard pin
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January 21, 2011 8:06:30 AM

Work systematically through our standard checklist and troubleshooting thread:
http://www.tomshardware.com/forum/261145-31-read-postin...
I mean work through, not just read over it. We spent a lot of time on this. It should find most of the problems.

If not, continue.

I have tested the following beep patterns on Gigabyte, eVGA, and ECS motherboards. Other BIOS' may be different, but they all use a single short beep for a successful POST.

Breadboard - that will help isolate any kind of case problem you might have.
http://www.tomshardware.com/forum/262730-31-breadboardi...

Breadboard with just motherboard, CPU & HSF, case speaker, and PSU.

Make sure you plug the CPU power cable in. The system will not boot without it.

I always breadboard a new build. It takes only a few minutes, and you know you are putting good parts in the case once you are finished.

You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU. Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.

If no beeps:
Running fans and drives and motherboard LED's do not necessarily indicate a good PSU. In the absence of a single short beep, they also do not indicate that the system is booting.

At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.

The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.
http://www.youtube.com/watch?v=5FWXgQSokF4&feature=yout...

A way that might be easier is to use the main power plug. Working from the back of the plug where the wires come out, use a bare paperclip to short between the green wire and one of the neighboring black wires. That will do the same thing with an installed PSU. It is also an easy way to bypass a questionable case power switch.

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.

If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card.

Silence, long single beeps, or series of short beeps indicate a problem with the memory. If you get short beeps verify that the memory is in the appropriate motherboard slots.

Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST.
At this point, if the system doesn't work, it's either the video card or an inadequate PSU. Or rarely - the motherboard's PCIe interface.

Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.
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January 21, 2011 8:44:58 AM

i got 500 watts cooler master and 450 watts tried both nothing happen its nt that i crash it just it occur after i clean up my pc case and rebuild again
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January 21, 2011 9:31:57 AM

i suspend its the mobo or cpu izit it? cause it doesnt give beeps nor display even i took out 2 ram there no beep at all
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January 21, 2011 10:18:14 AM

what u mean by reseat cpu? rebuild again? i just did without the case
what i did i plug 2 psu 4pin and 12 pin into motherboard and heatsink fan spin i try use ear piece to hear the beep but no beep at all and did switch ram slot 2 time with 2 ram which is working b4 this happen

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January 21, 2011 11:36:01 AM

i did to i have to put thermal paste again?
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January 21, 2011 12:59:39 PM

any 1 help solution ?? this problem , and about the heatsink after i take it out i didnt put thermal paste on and i just put it back like that.
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January 21, 2011 2:32:35 PM

If you didn't put thermal paste back on the heatsink, your CPU will overheat and shut your system down.
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January 22, 2011 12:49:06 AM

jockey said:
If you didn't put thermal paste back on the heatsink, your CPU will overheat and shut your system down.


but mine didnt shut down is the thermal paste still working? the problem is exactly like this video can u pls help me??

here the link http://www.youtube.com/watch?v=QtQ85bMjzd0&feature=rela...
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