Computer will not turn on

Custom
September 11, 2008 at 09:33:18
Specs: Vista Home Premium 64, Phenom 9850, 4GB Patriot
To make a very long story short, I tried to overclock my system but turned out to be unstable so I cleared the CMOS via CLR_CMOS on the motherboard. I first unplugged the machine, used the jumper, hit the power button to drain the rest of the power, waited ~20 seconds, removed the jumper and plugged back in.

When I hit the power button again, it turned on for a fraction of a second (fans spun up, LED's flashed, etc...) but immediately shut off. I hit it again and nothing happened.

I switched the PSU switch on the back after unplugging it, waited ~20 seconds, switched back and plugged in. Tried to turn it on again but the same thing happened.

Any help would be much appreciated!

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
Radeon 4850
Barrucuda 7200.11 500GB


See More: Computer will not turn on

Report •


#1
September 11, 2008 at 10:03:41
You should have waited longer before moving the jumper back - say, at least 5 minutes - 20 seconds may not be long enough.

Make sure the 3 or 4 wire cpu fan connector is connected to the mboard cpu fan header for that. Many recent mboards will shut down in a few seconds if no rpm is detected from the cpu fan.

Make sure all connections inside the case are all properly seated - all the way onto their pins or into their sockets, and the cards and ram all the way down in their slots.

See your mboard manual.
The clear cmos jumper may need to be on 2 pins in normal mode, or on a certain two pins of three.
Removing the clear cmos jumper altogether, or having it on only one pin, may result in a non-functional mboard.

If you still had live AC to the PS at any time during this when you changed a connection, you may have damaged the PS.


Report •

#2
September 11, 2008 at 11:40:35
What I am going to try when I get home is re-seat all the connections on the mobo.

I'll check the CPU fan- if I remember correctly though, that was one of the fans that started up then stopped about half a second later.

As far as the CLR_CMOS jumper, there wasn't one on there in the first place. If I clear it though, do you think I need to keep it on there? Ill check the manual when I get home too :P

I NEVER had the computer plugged in when I did this, I unplugged it before even opening the case and plugged it back in after I took the jumper off. The one thing I am worried about is that I hit the power button while the jumper was seated on there... (The power WAS disconnect however) Does this make a difference? One would think there wouldn't be enough power to do any permanent damage... but what do I know?!

Thanks for the help! Ill get back to ya tonight.

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
Radeon 4850
Barrucuda 7200.11 500GB


Report •

#3
September 11, 2008 at 12:57:02
What is the make, model, and capacity of your power supply?
I was looking at Radeon 4850 cards recently - you MUST have a PS with at least a 450 watt capacity if one of those 4850's is installed, and at least 50 watts more capacity for two of them, and the PS must be good enough quality that it can actually supply the max capacity stated continuosly.


"As far as the CLR_CMOS jumper, there wasn't one on there in the first place."

Do you mean it has pins but there was no jumper on the pins, or there was but it was only on one pin?

You can also easily clear the cmos on a desktop mboard by removing the mboard battery for a few minutes, with the live AC removed to the PS.

"I NEVER had the computer plugged in when I did this..."

Excellent. Not removing the AC power to the PS is a very common mistake.

"The one thing I am worried about is that I hit the power button while the jumper was seated on there... (The power WAS disconnect however) Does this make a difference?"

Probably not.
The large capacitors in the PS retain voltage for a while after the live AC has been disconnected from the PS. There is an led on most mboards that lights up even when the computer is NOT running that indicates there is power being supplied to some places on the mboard - that goes out once the capacitors have been drained. Some press the power button in for a while to speed up that process.
If you didn't remove or install the jumper while the led is lit up on the mboard, you doing that did no damage.

Was the cpu overheating when it was unstable with the overclocked settings? Upping the cpu core voltage in particular can make it overheat quickly.
If you got the Phenom in the AMD boxed set with the heatpipe heatsink, that heatsink is very efficient, but if you up the core voltage too much, the cpu can be damaged despite the fact the cpu temp didn't go up much.
......

If you wanted fast, you should have gotten the 6400+. It whoops all the Phenoms in performance doing most things.

Two cpus on older mboards, or dual or triple or quad core cpus on newer mboards, are a gimmick. You're only using one cpu unless you have special programs that can utilize more than one cpu, such as expensive high end graphics programs, or very recent games. Vista apparently can support more than one cpu, but as far as I know regular XP versions cannot. Some Server op systems can support more than one cpu.

If you want to try overclocking, don't do it blindly - search for overclocking info about your particular cpu, on your particular mboard, or at least on a mboard with the same main chipset.


Report •

Related Solutions

#4
September 11, 2008 at 14:09:38
My PSU:
Thermaltake Purepower W0100RU 500W ATX 12V 2.0

http://www.newegg.com/Product/Produ...

Thing is it was working fine for about a week before I tried to overclock it. I saw no evidence of an underclocked PSU, even when under stress such as playing Crysis.

It didn't have any jumpers on the CLR_CMOS. There are two pins that were empty on the lower side of the mb. Not near the battery. The jumper is currently off.

If there was no jumper on in the first place, and the way to clear the CMOS is to short those two pins, does that still become a problem when I drained the PSU? Because the pin was in place when I hit the power button (even thought there was no live power)

As far as the overclocking goes, this is what I did. I noticed my DDR2 1066 RAM was running at 800. So I went into BIOS to change that, and I did (mobo I have is known to do that by default). While I was in there, I changed the multiplier (I think?) and upped it a whopping 100mhz to 2.6ghz. I didn't change any voltages. I restarted and what prompted me to clear the CMOS was that the monitor wasn't receiving a signal- I don't know why. I checked several things, couldn't get it to work as decided it was time to clear my most recent settings. Still don't know what happened there...

I got the quad for one main reason- I wanted to future proof my PC. I know that most games do not take advantage of even two cores, but that is soon to change as far as I know. Four cores are good for heavy multi-tasking as well. I know at this point in time most apps aren't threaded for four cores, but when newer apps come out I'll be ready (plus the added benefit of multi-tasking).

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
Radeon 4850
Barrucuda 7200.11 500GB


Report •

#5
September 11, 2008 at 21:37:36
Ok here's the scoop:

I got a 700W Tagen from my bro, plugged it in, and the same thing happened. I know his PSU works fine. So, I guess this comes down to the motherboard then?

What do you think?

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
Radeon 4850
Barrucuda 7200.11 500GB


Report •

#6
September 11, 2008 at 22:45:30
"You should have waited longer before moving the jumper back - say, at least 5 minutes - 20 seconds may not be long enough".

You don't need to wait at all. Shorting the two pins while there is NO power to the board will clear the CMOS.

From your manual "After clearing the CMOS values and before turning on your computer, be sure to remove the jumper cap from the jumper. Failure to do so may cause damage to the motherboard."

Posting the complete model of the MBoard instead of just the chipset series would be helpful. Is this your model?

GA-MA78G-DS3H


Report •

#7
September 12, 2008 at 00:39:25
Here is my mobo:

http://www.newegg.com/Product/Produ...

As far as having the jumper in place with the power in/on- it never happened. Maybe this has something to do with the overclocking? It seems too much of a small amount to do anything though...

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
Radeon 4850
Barrucuda 7200.11 500GB


Report •

#8
September 12, 2008 at 05:41:44
Basically the same board as the one I posted. The information on the clear CMOS is standard practice. This board is a little different in that there is no run position. The manual still states momentarily contact is enough.

When you opened the case to clear the CMOS you MAY have disturbed a connection. Check and reseat all cables RAM and cards.

As far as not applying power. When you discharged the PSU with the plug out you still may have sent some current into the board.

Another possibility is static discharge. Did you take static precautions?

If after exhausting any additional troubleshooting you can't resolve this, I suggest you obtain an RMA number from Newegg and send the board in for replacement. You may not want to divulge the entire story. After all, at this time it may just be coincidence that the board died when it did.

If checking connections doesn't help then remove the board from the case and strip down to the bare minimum and run outside the case. This is called bench testing. Place on a non conductive surface and only use the following hardware.

All you want is CPU/HS/fan, 1 stick of RAM, monitor connected to the onboard video, keyboard. Connect the 24 pin and CPU power connectors but no other wiring to or from the case and no add in cards.

Short the two pins that normally go to the case power switch to run the board. If you get nothing, try without any RAM. Beep codes then will indicate missing RAM and may mean the stick you tested is bad. If no go with just the CPU then either the board or CPU or both are bad. Most likely to be the board.


Report •

#9
September 12, 2008 at 08:02:09
Make sure you have the power switch wiring connected to the right pins.
Make sure the case button for the power switch is not sticking so it stays engaged when you press on it and then let go - if it does the mboard may shut down in about 4 seconds, depending on bios settings.
Don't press the power button in and keep pressing, for the same reason.

See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:
http://www.computing.net/hardware/w...

Make sure the video card is well seated. Remove it and re-install it.

If that doesn't help.....

Make sure you have a speaker or speakers connected to the mboard so you can hear mboard beeps (see your mboard manual).
Remove the AC power to the case/power supply.
Remove all the ram.
Restore AC power.
Try to boot.
If nothing else is wrong, you will hear a pattern of beeps that indicate no ram is installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.

If your hear nothing, since you've tried another PS and doing that probably eliminated the possibilty of a faulty PS, your mboard may be damaged.

I have not fiddled with much overclocking. As far as I have experienced, not upping the cpu core voltage and merely increasing the multiplier may result in the mboard not booting, but it should not do any harm to the cpu, and restoring the default bios settings should allow the mboard to boot fine.



Report •

#10
September 12, 2008 at 08:15:50
tubesandwires touches on the OClocking which brings me to the question.

What settings were you resetting at the time of boot failure and what values were you entering?


Report •

#11
September 13, 2008 at 16:32:07
I just changed the multiplier in the Advanced CMOS settings. Also changed RAM speed from 800Mhz to 1066Mhz. This wasn't overclocking though, the RAM WAS 1066, the mobo just read it wrong.

For now, I have ordered a new mobo and should be on its way early next week. Ill let ya know what happens then...

thanks for all the help!

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
ATI Radeon 4850
Barracuda 7200.11 500GB
NZXT Tempest


Report •

#12
September 18, 2008 at 05:04:56
I guess a RAM speed of 1066 MHz for DDR2 is actually 533 MHz that should be set in BIOS at. If it was reading 800 MHz in BIOS, it was already overclocked considerably. 800 MHz x 2 ( double data rate ) is 1600 MHz.

Am I right ?

My RAM is DDR 400 (PC3200). In BIOS it is set at 200 MHz. Anything above 200 MHz is overclocking. If I go above 200, I see an increase in CPU speed.

Regards

SuatCINI


Report •

#13
September 18, 2008 at 07:57:35
Obviously, something has changed since your first post and you are now able to get into the bios Setup.

"My RAM is DDR 400 (PC3200). In BIOS it is set at 200 MHz. "

Is that on a different mboard?
If it is, that does NOT apply to your GA-MA78GM-S2H !!!

Your GA-MA78GM-S2H mboard CANNOT use DDR ram!

You need to do some reading.

Read your mboard manual!

DDR info
http://www.kingston.com/newtech/ddr...

DDR2 info:
http://www.kingston.com/newtech/ddr...

Differences between DDR and DDR2 ram:
http://www.kingston.com/newtech/ddr...
- it requires a higher voltage - it may not work at all in your mboard because of that alone
- the notch in the bottom of the module on a DDR module is in a different place - a DDR module cannot go all the way down in the ram slot
......

You have specified specified in your signature in your first post and several other posts:
"4GB Patriot DDR2 1066"

From the newegg page you pointed to
"Other Thoughts: Get the RAM that the manufacturer certifies to run at 1066. Its hard to find because the list isn't on Gigabyte's USA site, you have to go the the TW (taiwan?) site (last I checked anyway). I took a risk and got some different 1066 RAM because at the time Newegg didn't have the right kind. I ended up having to clock it down to 800 to make it stable. My fault for being impatient."
http://www.newegg.com/Product/Produ...

There is NO Patriot 1066 ram listed for this model in the list of tested and approved modules for this mboard:
http://www.gigabyte.com.tw/FileList...
There ARE other brands of 1066 ram listed for this model, including Kingston.
A NOTE in RED says:
Due to AMD AM2+ limitation, DDR2 1066 ram is only supported by one dimm per channel

That note is about something you will probably find info about in your mboard manual - you probably need to install 1066 ram in certain slots!

The manufacturer often does not test all possible modules, or the list of modules may be outdated. In that case, if you look up the module you were thinking of using or buying on the web site of the ram manufacturer by using your make and model number, if the module ID string is found on a list of modules compatible with your model, then it IS definately compatible with your mboard.

The Patriot memory configurator has NO listing for your mboard model, or any other Gigabyte AM2+ mboard model:
http://www.patriotmem.com/configura...

Therefore - your Patriot ram MIGHT work in your mboard properly, but there is no official info that I can find that it will for sure!

It is foolish to buy ram without checking out whether it is listed as compatible with your mboard model before buying it!
The info in an ad is often insufficient for you to be able to determine whether it will work in your mboard for sure!

E.g. All these Kingston modules are definately compatible with your mboard, and some of them are also in Gigabyte's list of modules that have been tested in your mboard model and DO work properly in your mboard:
http://www.ec.kingston.com/ecom/con...
......

Some ram does not strictly adhere to the standard JEDEC specs most bioses use for their default settings. In that case, you must custom set the ram timing specs in the biosSetup to that specified on the module - the 4 timing numbers - they must be the same as those stated for the module, which may be printed on the module itself, or if not in the specs for the module, or higher (= slower).



Report •

#14
September 18, 2008 at 08:34:48
Tubesandwires,

I am not the one who has the problem. Therefore, you confuse my post #12 with the original poster. Of course, my motherboard is different. And it accepts only DDR400.

I am sorry if I caused confusion.

Regards

SuatCINI


Report •

#15
September 18, 2008 at 09:09:02
Oops.
DDR 400 is the max your mboard can use, but it will run with slower DDR ram.

Well in any case, hopefully the other stuff is useful to marshall824


Report •

#16
September 22, 2008 at 20:54:30
As of right now, I am still waiting on a new board to come. Hopefully it'll be here Wed, if not then Thursday! And if I cant get it to work again, Ill be back!

As far as my RAM goes, I think my BIOS was reporting it at the actuall speed- not the speed its rated for (as you said in your post 400Mhz x 2)It was originally at 800 (which I had read numerous reviews saying my board would do that by default) so I changed it to 1066.

I guess the real question here is- did I fry my mobo, or by doing that did I only have to flash the BIOS?

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
ATI Radeon 4850
Barracuda 7200.11 500GB
NZXT Tempest


Report •

#17
September 23, 2008 at 07:33:21
You have not mentioned anything that I would consider a possible cause of why your mboard would not boot when it did before, and the mboard still won't boot with another power supply.
According to what I found in response 13, there is no confirmed info that your Patriot ram will work in this mboard at 1066mhz, but even if it won't, if it was working at 800mhz before it should work at that speed after you cleared the cmos.

NEVER flash you bios unless you find information such as in release notes for the bios version that says it will cure a problem you are having.
You are taking a big risk when you flash your bios - if the flash fails, and/or the flash chip physically fails while flashing (this is COMMON - these cheap flash chips can only be flashed an unpredictable small number of times), you will have a mboard that will not boot.

In any case, the ram was working at 800mhz before - it should still work at 800mhz, which according to what you have said is what the bios sets it to by default.

However, that Patriot ram may not work at 1066mhz in the replacement mboard either.
If it doesn't, remove the mboard battery for a few minutes instead of fiddling with the clear cmos jumper - that is 100% safe to do to clear the cmos.


Report •

#18
September 26, 2008 at 13:28:57
Hey guys,

Got the new mobo and it works great! I'm still not sure what happened but everything is good now!

Thanks for all the help!

AMD Phenom X4 9850BE
Gigabyte 780G
4GB Patriot DDR2 1066
ATI Radeon 4850
Barracuda 7200.11 500GB
NZXT Tempest


Report •

#19
September 27, 2008 at 07:06:12
That's good to hear.

Report •


Ask Question