Boot Problems with 8rda+

[Arnoldhasmail]

I have a 8rda+ with a 2400xp and I've been running it at 11.5 x 200 with no problems...when I try the chip at 12 x 200 it runs stable as long as I increase the voltage but cold boots cause a system beeping at boot and won't even let my video card or bios post...warm boots are fine and the system runs perfect aside from the cold boot issue. I've run prime for hours and hours and gamed for whole days but cold boots cause me to clear the cmos...

I've tried multiple bios updates with no success

Any ideas out there

PLEASE

Thanks in advance

[Daniel ~]

Have you tried the newest?

Time to unleash ..........

[Arnoldhasmail]

Yea...I'm running it now...It doesn't seem to make sense. Why would a setting run fine and boot fine when warm but not boot when cold. I hate not running at max stable speed...

[Arnoldhasmail]

I checked and I'm getting a "C3" error code when the boot problem occurs...I looked it up in the manual but I still don't understand why it happens at 12x200 and not at 11.5x200. The errror code says "expand compressed bios code to dram"???

Any Ideas Out There?

[Holst]

Either your CPU is maxed out, or your PSU is struggling.

WHat make and model of PSU are you using ?

What voltages ?

[Arnoldhasmail]

I'm running an enermax 350...my 5 volt line seems very low(4.730) but everything else looks within spec...


If you think it's the psu...could you direct me in how choose a new unit...I'm not very educated in power supplies and there doesn't seem to be much non-bias info available

[Holst]

What Vdimm and Vcore are you running.

Some neermax 350watt units can struggle when in an overclocked enviroment.

Choosing a PSU isnt easy.

Persoanlly im using a sparkle 400watt unit, others are doing well with antec truepower, although there are allot of choices of PSU.
Have a look on forums and at prices and see what other people prefer.

Generally you get what you pay for, so avoid $20 550watt PSU's

Idealy you would be able to borrow another PSU to test with, as it may be that your PSU isnt the problem at all.

[BTank]

did u try leaving your powerstrip or ups on?

[Arnoldhasmail]

I'm running a 2.77 vdimm and 2.0v core...I needed it to get the 12x200...I'm using the enermax because I always heard good things about them...



And I have NOT tried leaving my ups /power strip on...but I will

Thanks guys, I'll let you know.

[Arnoldhasmail]

Originally posted by BTank
did u try leaving your powerstrip or ups on?

That was it!!!!!!

Thanks BTank...I always turn off my power strip but if I leave it on...the system boots perfectly...if I turn it off for even a few minutes...it won't cold boot.

I really appreciate the input because I never would have tried that.

[timbob2469]

Arnoldhasmail , A good psu FAQ page can be found here.http://www.ocworkbench.com/articles/psu/psup1.htm
The thing I like about this FAQ is the fact that they don't recommend what brand of psu to buy , only what to look for and why.
bob

[Arnoldhasmail]

Thank-You very much

[skane]

more info on this problem in this thread

[Arnoldhasmail]

My problem is similar to the one on that thread but I don't boot at default when cold but don't boot at all...leaving the power strip on to give continious power to the power supply took care of the problem...

Thanks

Still don't know why but it works...

[timbob2469]

When you leave power on to your ATX psu it supplies standby voltage to the motherboard (5volts low amperage 1000mA or 1A) so that if you have wake-on-lan enabled and a nic card that has the WOL feature (the motherboard supports it but the onboard nic doesn't have it) you can boot up your pc from across a network. Also if you read page 1-7 from the manual you will note that power is maintained to the ddr memory as well. Also see page 3-14. This might explain the problem . My guess is that if you are overclocking to the limit of stability (I've only tried that a few times ,wink,wink), When you power up from a cold boot (no power to the psu for a while) the psu has to supply the most power of that computer session because everything has no juice , I believe this is called inrush , Instead of crashing you get default (safe) values so that the system can start up at an acceptable (to all the components) level. The fix , just leave the powerstrip on , you are using 5 volts @ 1 Amp , a kitchen clock uses way more power than this , your electric bill is not going to go through the roof.
bob

[Arnoldhasmail]

Thanks again Bob...That makes sense...and I know I'm at my overclocking limit, I'm getting 2400 mhz out of a 2000 mhz cpu with air cooling.

[Áedán]

Originally posted by timbob2469
The fix , just leave the powerstrip on , you are using 5 volts @ 1 Amp , a kitchen clock uses way more power than this , your electric bill is not going to go through the roof.

A kitchen clock uses way less power than that! That's only because a kitchen clock uses very little power. Let's put it this way, a PSU on standby is going to be consuming less power than a lightbulb. Less power than even a small lightbulb. I would guestimate the PSU consumes less than 10W worth of power.

Áedán

[bradmax57]

what are good voltages? and what are bad? I got these from usdm, I think it wa sbob who replied to my post about this earlier said they looked good but im not sure, i dont want to buy a new psu if they seem okay, i just cant hit 200