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Help, computer does cyclic reboot (but it doesn't reach mobo startup screen)

Ricemarine

Ricemarine

Lifer
Ok, well, today my computer started acting funny by shutting itself off several times (not by windows shut down, I mean automatic power off), which lead to me to reseat the 12v 20 and 4 pin connectors several times...


Now though, what happens now is that it starts it beeps and starts its usual boot up to the start up screen (for the mobo), but then it never gets to turn on the monitor to show the startup screen... It just reboots over and over, starting the dvd burner like it should, and then reboot, reboot, reboot, reboot... a cyclic reboot. So now I cannot get into bios, nor do I see anything on the screen... I've tried reseating the cpu, video card, ram, clearing cmos (battery and pin), changing ports on IDE and SATA, booting off of 1 hard drive, and none, but it just doesn't boot...


What would you say is the cause? Any possibilities of it being fixed?
RMA?
Any other suggestions before I RMA?

WATCH THE VIDEO
A video of what is happening.
 
Yep sounds like a power issue (either PSU is crapping out or PSU is fine but power somehow isn't reaching the mobo right) or have you checked the capacitors on your mobo? Symptoms just like that can be due to leaking capacitors (was a problem on some builds of mobos) which in turn causes power/voltage problems.
 
Originally posted by: Rinaun
sounds like a MOBO PSU problem. Not sure, try reseating everything.
Click to expand...

I did.

Originally posted by: duragezic
Yep sounds like a power issue (either PSU is crapping out or PSU is fine but power somehow isn't reaching the mobo right) or have you checked the capacitors on your mobo? Symptoms just like that can be due to leaking capacitors (was a problem on some builds of mobos) which in turn causes power/voltage problems.
Click to expand...

So far, none of em are leaking that I can tell...
 
Originally posted by: Ricemarine
Originally posted by: Ricemarine
Originally posted by: tiap
Try another psu first
Click to expand...

I don't have a second.
Click to expand...

Ehh does clearing cmos mighht help?
Click to expand...

Sorry, but the joys of doing your own troubleshooting is having the parts/equipment to do it.
Borrow one if possible.
Can't do too much if you can't post.
You can try default cmos settings, but your symptoms don't point to this.

 
Originally posted by: tiap
Originally posted by: Ricemarine
Originally posted by: Ricemarine
Originally posted by: tiap
Try another psu first
Click to expand...

I don't have a second.
Click to expand...

Ehh does clearing cmos mighht help?
Click to expand...

Sorry, but the joys of doing your own troubleshooting is having the parts/equipment to do it.
Borrow one if possible.
Can't do too much if you can't post.
You can try default cmos settings, but your symptoms don't point to this.
Click to expand...

meh CMOS doesn't work heh.
 
Originally posted by: potato28
Then buy a cheap high voltage PSU. If u test it and it posts, then use that PSU till u buy a new PSU.
Click to expand...

As in cheap, I'd need a 500w?. lol...
32 amps on the +12v. heh.
 
Unplug everything except the cpu, hsf, 1 stick of memory, psu, the vidcard, and the monitor... you should be able to boot partway into the bios. keep it simple. if that works, shut down, add the mouse and keyboard, etc... some boards need to have the ram in a particular slot if there's only one stick... try another stick if you have more than one... try a different vidcard...

At least you'll know what it's not...
 
Originally posted by: Jhhnn
Unplug everything except the cpu, hsf, 1 stick of memory, psu, the vidcard, and the monitor... you should be able to boot partway into the bios. keep it simple. if that works, shut down, add the mouse and keyboard, etc... some boards need to have the ram in a particular slot if there's only one stick... try another stick if you have more than one... try a different vidcard...

At least you'll know what it's not...
Click to expand...

Yeap. tried.
If you look at the video it shows nothing plugged in, hard drive light not running, so all IDE and floppy is clear, no sound card, just the fans and the system. with 1 stick.
 
http://www.motherboardrepair.com/ Read the symtoms on the right. Look at the images
on the left. These images apply to the caps inside the PSU also, bulging, swelling, leaking
baby poop. Has there been a bad odor in the room lately but it's not you or the dog.
Like rotten eggs....Really!

http://www.badcaps.net/ > Identifiying Bad Caps, read that page.

To inspect. Use a small mirror against the MB's PCB, tilt the mirror and shine a flashlight on the mirror not the cap....You will see the reflected image.

The PSU would have to be opened up for inspection......If it's out of warrenty, do it.

A PSU w/spiking voltage can/will KILL your HD. Ask FlyingPenguin, he lost several.

My 3 year old Intel board is on the list for cap watch. Are you using a 2 to 4 year old
antec 430? That bad boy is high on the list.


...Galvanized
 
Suprised no one asked this yet.

What kind of PSU do you have? a link to it would help.
What is your motherboard manufacture and model number?
And what does the beeping sound like? short, repetive, long pauses.. Etc. a small recording of it or descriptive word usage would help.

The beeps would be the BIOS codes identifying a specific general (that doesn't make much sense) area to look for problems at.
 
Originally posted by: QuiksilverX1
Suprised no one asked this yet.

What kind of PSU do you have? a link to it would help.
What is your motherboard manufacture and model number?
And what does the beeping sound like? short, repetive, long pauses.. Etc. a small recording of it or descriptive word usage would help.

The beeps would be the BIOS codes identifying a specific general (that doesn't make much sense) area to look for problems at.
Click to expand...

Um... its in my signature...

PSU = enermax 485w
Motherboard = MSI K8n Neo2 Platinum MS-7025
Beep = regular short beep for startup. (you really should watch the video, you can hear it.)
D-LED bracket = orange, red, red, orange (not stated in manual, for colors aren't supposed to be orange in the first place)

Btw galvanizedyankee, I didn't find any swelling or leaking capacitators, but the reading sure did help.
 
so yeah I talked with others, they blame the power supply first... Since the mobo posts correctly.

any other suggestions?
 
Well i didn't see that video link when i read this thread the first time; it wont load for me though as it wont go past the connecting phase.

You might want to go up to your local computer store and pickup a ATX powersupply tester those can be anywhere from $10-$30. And if it passes the tester, it would be a mobo problem.

Also have you tried booting with the mobo outside of the case?
 
Originally posted by: QuiksilverX1
Well i didn't see that video link when i read this thread the first time; it wont load for me though as it wont go past the connecting phase.

You might want to go up to your local computer store and pickup a ATX powersupply tester those can be anywhere from $10-$30. And if it passes the tester, it would be a mobo problem.

Also have you tried booting with the mobo outside of the case?
Click to expand...

To answer that question, no. because I know I'm not shorting it in any way possible since the computer has worked for the past couple months.
 
Try unplugging all the drives, and all case fans, and see if it boots. If its does, PSU, if not mobo ??
 
Originally posted by: Markfw900
Try unplugging all the drives, and all case fans, and see if it boots. If its does, PSU, if not mobo ??
Click to expand...

I have tried unplugging, still no boot. Mobo?
Even though it beeps fine?
 
Your options are:

Buy New PSU to test out. If you still have problems, then you need a new motherboard.

However, if I were you I would get a new motherboard first. I've had bad experience with MSI in the past and a good history with Enermax. But thats just me.
 
Originally posted by: sumyungai
Your options are:

Buy New PSU to test out. If you still have problems, then you need a new motherboard.

However, if I were you I would get a new motherboard first. I've had bad experience with MSI in the past and a good history with Enermax. But thats just me.
Click to expand...

ahh k well I'll call MSI tomorrow and see what they say.
 
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