Major New Build Problem - Worked fine, now doesn't Post

Windle

Windle

Windle

Soldato
Joined
19 Oct 2002
Posts
14,154
Location
Scotland
Hi guys,

My new build which was put together this morning and has been working fine all day is now refusing to post. Specs are:-

Abit IP35 Pro
Corsair HX520w Modular PSU
C2D E6850 @ Stock with Stock Cooler
2x2gb 5300 DDR2 RAM
500gb Western Digital AAKS
16x DVD-RW
Sapphire X1950 Pro 512mb Pci-express

Basically it was put together this morning and works fine, was stable at about 35 degrees. Has been left on all day, about an hour ago while watching a film in my living room my girlfriend complained of a funny noise. After assuming it was the film we then worked out it was coming from my new pc in the bedroom.

Quickly checking with the motherboard utility it was a Voltage alarm, marked next to "DDR2" on the utility. Stupidly i panicked and shut it down before checking any more details. Upon rebooting it was performing a post error noise "1 long 2 short" which apparently relates to Graphics?

Upon unplugging the power and checking all connections it now doesn't even make it to the post stage. Have tried unplugging HDD,DVD-RW and Graphics in different order. Makes no difference. Have tried without all ram, or with alternating 2gb sticks. No difference.

The pc now starts up for literally 2-3 seconds, the fans start to spin then it switches itself off then tries again. This continues as long as you let it. Upon googling it. some people had complained of this problem with this board and claimed a different PSU would fix it. I've tried my old power supply and the same problem still exists. No matter what i do it won't even reach the post stage.

Is my motherboard fried? If anyones an IP35 expert, here's the post sequence on the mobo LED :-

8.1 - Start power on sequence
8.2 - Enable ATX power supply
8.3 - ATX power supply ready

then it jumps to

9.8 - De-assert ATX power supply
9.9 - Complete power off sequence

Now after 8.3 it should be 8.4 - DDR Voltage ready which is obviously where the problem lies. What causes this? As it can't get the DDR voltage ready and the warning alarm which went off was a voltage alarm for "DDR2" where is the problem?

Help muchly appreciated and needed!!!!

:confused: :(

*Oh and i wasn't messing around with the voltages or clock speeds or anything today. It's all been left as default."
 
can you get to the bios ? if soo check what voltage the ram is getting and then check what voltage the ram is rated ate, maybe on packaging or look at there websites. lots of ram these days need more then what the motheboard gives it by default. this can sometime casue booting problems.

the fact your pc worked then this happens is strange but is worth checking that ram voltage thing.
 
As above really,

sounds silly (and in this case doubt it will help but never the less), but try stripping the system out of the case, taking ALL apart. everything. (well apart from removing CPU and heatsink thats just too much effort !) ad slowly put it back together outside of the case and try it with just the cpu and motherboard. and makes sure you get the correct beeps (the beeps described in your bios that mean gfx/memory error) then stick ram in, etc etc until you've built it all up. should pin point the problem.

although i would suspect the psu is duff, but since you tried another im gonna have to say maybe the motherboard is dead. In which case RMA time me thinks :(
 
my friend had the same problem the other night except it started off not booting. we tried reseating the memory and gfx card and unplugging various devices, we also tried a different gfx card.

but we did notice that the memory slots were not very good and memory seemed loose, it was in the right way and the clips were closed down on it. the clips also come away from the motherboard far too easily, we reset the bios to see if that worked and no joy.

in the end i took the memory out and put it back in again and it worked.

but then it did what the OP said more or less, we had to go in to bios and load the default settings for the hardware then in all worked fine, no problems since fingers crossed.

hope that helps
 
Right got it running again. Had to clear the CMOS which then allowed it to post. For now i've upped the DDR2 voltage to 2.0v which is within the manufacturers limits but will be monitoring the system closely today!
 
Right the alarm just went off again. DDR2 VTT voltage alarm, it's now gone off.



Any ideas what's causing this? Is this the CPU voltage? Its now sitting at 0.99v on DDR2 VTT and that's working fine, no alarm anymore?
 
Thats been done, no change. Oddly enough it's now been on for around 1hr with no alarms. But there has been a game running during this time, still seeing some minor CPU Core Voltage fluctuations though.
 
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