Overclock failed error.

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xHALORDx

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Aug 1, 2012
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Hello, I am having an issue when I try to boot my PC with its ram on XMP mode. For the past year I had been using my 32gb 1866 at 1333 and I finally decided to do something about it, I turned XMP to get to 1866. Now about 75% of the time I Launch my PC I get overclock failed - press F1. The 25% of the time my that my PC starts up I get weird things happening like USB devices disconnecting such as my external hard drive every few seconds and then it comes back. I'm going to assume that its power related and from there I'm wondering if my PCs PSU cant handle it. Heres a list of specs off the top of my head.

Mobo: Asus sabertooth Z77
GPU: 2x GTX 670 4gb SC sli
Ram: 4x8gb 1866.
CPU: i7 3770k
PSU : Seasonic 760w
2x 1tb HDD
1x samsung 830 256gb SSD
Crap tonne of USB devices.

(Nothing is overclocked besides the RAM)
So I think I found the problem and want to know if buying a new PSU will allow me to OC my RAM - plus my CPU an GPU because they aren't currently overclocked, And fix the problem I am having.
 
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xHALORDx

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I'm quite inexperienced when it comes to the bios and I assume I have to enter manual stuff in to get 1600? What do I need to do?
 
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bebop460

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Is your CPU oveclocked? It can cause memory issues. If so, run memtest to ensure stability.

I'd go to Asus' website and/or download the user manual for the motherboard to see if the memory is compatible. If it's compatible but won't run XMP, I'd RMA it; you paid for 1866 memory, so it should run at that spec.

That said, I agree with SR-71 Blackbird in that there's no noticeable performance gain over 1600mhz.

If you wish to set it to 1600mhz, first go to the manufacturers website and find your model of memory. Write down all of the spec.s.

The memory configuration area in the BIOS is usually in the overclocking section under VDIMM/RAM/DRAM/Memory timing configuration. Change it from XMP to manual (or sometimes, oddly enough, you may have to select "auto" to manually configure it). You should now be able to change the frequency to 1600 mhz.

I'd leave the latency and timing configurations on auto and boot into Windows. Restart the PC and enter the BIOS again. Even though you are running a lower frequency, you want to ensure that the memory has been automatically configured to run at manufacturers timings. If not, manually input the timings/latency etc.

EDIT: I'd also recommend finding a power supply calculator to determine if your PSU is providing enough juice.
 
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Buzz247

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Mar 18, 2013
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The sabertooth also has an auto xmp check built in. Dont recall if it has a memok button like the p8z77-v series, but if so, click this button on boot to force ram recognition. Make sure your XMP is set to auto, or at least to 1866. No need to downclock to 1600 regardless of noticeable difference. You just have some settings off is all. Worst case, use bios flashback to reset everything to factory and retune from there
 
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Buzz247

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Your psu is likely quite fine. Your usb devices run off 5v rail, 12v for most everything else, and 3v for most mobo use. Psu calc will likely tell you around 670-680w usage leaving you fair room

To be fair - it is possible, however remotely, the number of usb devices is exceeding 5v rail amperage. This would not affect ram clocking, but to resolve, get a powered usb hub - tada! Not uncommon for board boot to cause momentary disconnect on usb externals. As chips engage for linking and driving, this can occur. Even keyboards and mice will do it. Nothing to see here - move along move along lol
 
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xHALORDx

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I can set it to 1866 and the USBs keep disconnecting but even if I ignore that which I can't because if I playing a game on that HDD and it discons it crashes I don't really want to have to reset my PC 5 times everytime I want to turn it on until it skips the OC failed message
 
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Buzz247

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Wait a minute... your usb are randomly disconnecting not at start but during regular use? Get a powered hub

And... have u actually tested your cpu oc? Using what and how long? Have you run memtest86 while in 1866 xmp? U may have a bad chip. Or may have to manually relax the timings a notch or 2. Have you checked manufacturer recommended timings against your mobo bios settings? Odd to ask this but gonna anyway - are you oc'ing your ram only and not your cpu?
 
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xHALORDx

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I just went to AI tweaker and clicked XMP. How do I run memtest86?
 
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Buzz247

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Oh no... you used AI SUITE? *facepalm* if so there's your problem. Horribly unstable and screws with bios unreliay and known for messing up windows registry. You can call asus tech support and wait hours... or I can tell u what they would say. Clean install of windows will fix your usb issue. Then... after that... go into BIOS from boot flash screen, go to advanced settings in your uefi, and set ram ddr to XMP or XMP profile 'x' (depends on your bios version) to whichever is the 1866 setting. Every problem solved. And dont touch that crap software again lol. Any changes do in bios only
 
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bebop460

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Go to their website. Burn the program to a CD per their instructions. Be sure #1 boot priority in the BIOS is your DVD drive.

It will auto boot the disc and run Memtest. I'd do 5+ passes or ideally test overnight to gauge stability
 
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bebop460

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No worries, I forgot the first part. For some reason, "AI Tweaker" went right over my head. I agree; assuming it's a software overclocking program, it is most likely the cause of the issues and a clean install is the best solution.
 
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