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Need help on why system not booting

post #1 of 10
Thread Starter 
I am having a terrible time trying to figure out what is wrong. My system does not boot up.

My system has the following components

MB GIGABYTE GA-EP45-UD3R
Memory G.SKILL PI Black 4GB (2 x 2GB) DR2 800
CPU Intel Pentium Dual-Core E6300
HDD1 WD 1TB Black Caviars
HDD2 WD 1TB Black Caviars
Graphics Sapphire HD4650 1GB Radeon Video
Power Supply SILVERSTONE ST56ZF 560W
Case Antec 200
OS Windows 7 Professional 64-bit
DVD-RW SamSung DVD RW
Optical Drive LITE-ON Black 4X BD-ROM Blu-ray

I will keep it short and just tell you the current state

I have memory cards plugged in slot 1 and 3.

When I power up, this is what I observe

All lights on MB go on and just stay on
The power supply fans go on
The Antec fans go on
The CPU fan momentarily wiggles and that's it

When I try to power off, I get no response so I need to click the power supply off.


I have taken MB out and reassembled it again. I made sure all the wires from Antec are properly plugged into MB. Usually when it boots up I see the MB lights blink a lot and then it boots and I see boot up on screen. Since the lights stay on and don't blink, I assume the graphic card is not relevant to problem but that and Antec box is the only thing really left. I don't notice anything being shorted out either.

Any ideas?
Edited by prioris - 5/13/11 at 3:02pm
post #2 of 10
I would check to see if the CPU was put in correctly. Next, I would try putting the ram on slot 2 and 4, but im not sure what your manual says for that particular mobo. Then, I would probably check to see if your 8-pin connector is connected in the upper left corner of your mother board. The last thing is to check if your DVD drive if it is connect to sata and install your windows if this is newly build.
post #3 of 10
"The CPU fan momentarily wiggles and that's it" - ?

yeah .. reinstall the ram sticks and check if the cpu's heatsink is installed properly and that the heatsink fan is plugged in
Týr
(20 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Gigabyte P67A UD3 B3 Zotac GTX 760 AMP! G.Skill Ripjaws X 4x4GB CL9 1600 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 128GB WD Caviar Blue 1TB WD Caviar Green 3TB WD Caviar Green 3TB 
Optical DriveCoolingOSMonitor
Samsung DVD-RW SATA Cooler Master Hyper 212+ pull config Windows 10 Shinhwa 22" 1080p 
MonitorMonitorKeyboardPower
Shinhwa 22" 1080p Viewsonic 24" 1080p Corsair K70 RGB XFX XXX Edition 650w Modular 
CaseMouse
Cooler Master HAF 912 Advanced Logitech G1 
  hide details  
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Týr
(20 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500k Gigabyte P67A UD3 B3 Zotac GTX 760 AMP! G.Skill Ripjaws X 4x4GB CL9 1600 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 128GB WD Caviar Blue 1TB WD Caviar Green 3TB WD Caviar Green 3TB 
Optical DriveCoolingOSMonitor
Samsung DVD-RW SATA Cooler Master Hyper 212+ pull config Windows 10 Shinhwa 22" 1080p 
MonitorMonitorKeyboardPower
Shinhwa 22" 1080p Viewsonic 24" 1080p Corsair K70 RGB XFX XXX Edition 650w Modular 
CaseMouse
Cooler Master HAF 912 Advanced Logitech G1 
  hide details  
Reply
post #4 of 10
First you must get your CPU fan spinning. Hope the CPU is not damaged yet.

Need to make sure there is no short between the motherboard and case.

Unplug your PSU cable from the wall socket or spike arrestor. And ground yourself to prevent ESD.

Now disconnect all mounting screws and all cables and carefully remove the motherboard from the case. Place it on something like cardboard or any flat surface on top of case side opening. Make sure that it does not touch anything that conducts electricity.

Observe the CPU Heatsink Fan and make sure it is firmly attached with all 4 locking pins secure.

Connect the power supply main 24 pin connector and also the 8 pin connector located near the CPU to the motherboard. Make sure the CPU fan is connected properly to the designated jack labled CPU_Fan. Try to position and balance the motherboard outside the case so minimal stress is placed on power supply cables you have connected.

Keep in your graphics card in and make sure it is seated good and connect the power cables required and the out put jack to the monitor. Use only one stick of RAM, Slot 2 should work. And leave everything else unplugged.

Plug the input cable back into the power supply. Turn on switch on rear of PSU. Now with a screw driver carefully short the 2 power-on pins for just a moment which should turn your PC on. The pins are on the motherboard front panel header usually located at far card edge opposite from CPU (refer to manual for motherboard location of front panel header and power switch pins labled pw+ and pw-)

Shorting these pins should power up the computer so check and see if the CPU fan is stays spinning. If it does not stay spinning unplug PSU right away.

But if the CPU Fan remains spinning the motherboard was likely shorting to the case. Or less likely a component we have left disconnected during this test from the power supply was causing problems. And with luck you may even get a display image.

Depending upon the results of this test we can further help you find the problem or problems.
post #5 of 10
Thread Starter 
============
>I would check to see if the CPU was put in correctly.

I had MB replaced but and did reseat in numerous times on original board

>Next, I would try putting the ram on slot 2 and 4,

DONE THAT ... still NO BEEP


>The last thing is to check if your DVD drive if it is connect to sata and install your windows if this is newly build.

Doesn't even reach that point but did check all connections multiple times
No screen messages seen so DVD and HDD peripherals moot

==================

>yeah .. reinstall the ram sticks and check if the cpu's heatsink is installed properly and that the heatsink fan is plugged in

DONE THAT a number of times on original MB board and still no beep

==================
>First you must get your CPU fan spinning. Hope the CPU is not damaged yet.

it is only on for short time so never has chance to warm up and should be ok

shouldn't fan only go on when cpu temperature goes high enough ?

>Need to make sure there is no short between the motherboard and case.

Did that with original MB and still same problem

I will take replacement MB board out at some point along with doing other steps and give you status



>Use only one stick of RAM, Slot 2 should work. And leave everything else unplugged.

tried using and swapping single stick of memory in slot 1 and 2 and still NO BEEP

==================
>Connect the power supply main 24 pin connector and also the 8 pin connector located near the CPU to the motherboard.

>Then, I would probably check to see if your 8-pin connector is connected in the upper left corner of your mother board.

ARE YOU TALKINGT ABOUT ATX_12V_2X4 connector ... I don't recall connecting anything into that ever nor do I see anything on power supply

There should be one main power cord to plug in

I think this connector is used on maybe older power supplies

==================

I built the machine about 16 months ago and ran fine and long story on how I reached this point but I am at this point.

I am getting NO BEEPS to help me diagnostically.

I even had the MB and Power Supply replaced.

Before I replaced MB, I just plugged in the power cord, CPU stuff and 4 wires (HD,RES,POWER,....) while it was out of Antec chassis and still no beep. I haven't tried this with replacement yet. Gigabyte even told me the original board worked.

There are cases where faulty power supply could cause problems.

I unplug the Graphics card and memory completely and st6ill no beeps to indicate missing memory or graphics.

THEN

I tried just putting in only first memory stick in slot 1 and still no beep.
I tried just putting in only second memory stick in slot 1 and still no beep.
Tried it in slot 2 also.

In the old MB board, I tried re-seating the CPU.

Without any memory or graphics card on board, I am down to focusing on

1) CPU seating
2) Trying replacement MB out of the chassis and unplugging everything except power cord, cpu stuff and 4 wires (HD,RES,POWER,....)
3) Power supply

I figure with just these involved I should get at least some BEEPS


I think the CPU fan should only start up if the CPU reaches higher temperature and should turn on and off accordingly. Maybe I am wrong.

The CPU fan has been checked and rechecked over and over.


I've came across a 2009 post on tom's hardware where more than a few people SEEM to have somewhat similar problem of NO BEEP although no solution was posted. Their computers worked fine for a year or more and then all of a sudden theyt stopped working and NO BEEPS. One guy had it happen to two different computers in home around same time.

I've been at my wits end.
Edited by prioris - 5/14/11 at 7:45am
post #6 of 10
Thread Starter 
I read in manual where it uses Award BIOS

=============
Q: What do the beeps emitted during the POST mean?
A: The following Award BIOS beep code descriptions may help you identify possible computer problems.
(For reference only.)
1 short: System boots successfully
2 short: CMOS setting error
1 long, 1 short: Memory or motherboard error
1 long, 2 short: Monitor or graphics card error
1 long, 3 short: Keyboard error
1 long, 9 short: BIOS ROM error
Continuous long beeps: Graphics card not inserted properly
Continuous short beeps: Power error
==============
post #7 of 10
So are you saying that you never plugged in your 8 pin? Because the board I am looking at ---->MB GIGABYTE GA-EP45-UD3R has an 8-pin connect just above the Ultra Durable plate. in the very top left corner. Its white with 8 holes.

look for this to be plugged in with a cable.
post #8 of 10
"ARE YOU TALKINGT ABOUT ATX_12V_2X4 connector ... I don't recall connecting anything into that ever nor do I see anything on power supply"

This is your CPU power connector. An 8 pin connector located by the CPU near the card edge. You must have this plugged in or you will not boot. And your power supply does provide that cable. You may have a hard time locking it down because the CPU HSF and case its a tight area. And you need to make sure it snaps in securely. I usually connect that one before I screw the motherboard in place.
post #9 of 10
Thread Starter 
I believe the ATX_12V_2X4 is for an older style PSU

I just have on cable going to 20 pin or so main power supply connector labeled ATX on right side edge of board.
post #10 of 10
Thats the problem though, you need to plug a 8 pin in to that socket. It is use to power the CPU. Its not for an older style PSU. You should plug that in and tell us what happen okay?
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