Black screen and 3 to 4 Beep sounds when PC Wakes from Sleep

[79]

Hello,

Everytime when my pc boots from Sleep, the black screen appears and 3 or 4 beeps are heard (even some kind of error pop-up msg is heard through the speakers, but obviously i am unable to see what it says)

It does not matter if the pc was in sleep mode for 1 minute or 14 hours, this behavior is always present.

The system runs totally fine and stable by booting pc when it was previously shut down

Current main specs:
- ASRock H97 Pro4 Mobo
- Intel i7 4790
- Nvidia GT 740
- G.Skill Ripjaws X Series 16 GB (DDR 3)
- Kingston HyperX Fury SSD
- Seagate HDD
- Antec EDG 650 W (Edge Series) PSU
- Windows 7 64-bit OS

Thanks in advance for any info and help

 

[Karadjgne]

It's the psu, but not in the way that you think. The Edge is a group regulated design, so has issues with any cpu Haswell or newer. Should be an easy fix. Go into your bios and look for the section regarding sleep/C-states. You'll want to adjust this to make sure the pc does go to c-states below 3. Sometimes this is listed as S-1 or S-3, depending on the bios. The pc will still sleep, it just won't then go into the ultra-low power modes.

 

[79]

I have checked the BIOS and this is the current situation regarding C states:

CPU C States Support -> Auto
Enhanced Halt State (C1E) -> Auto
CPU C3 State Support -> Auto
CPU C6 State Support -> Auto
CPU C7 State Support -> Auto
Package C State Support -> Disabled

So, the only lower than 3 is C1E. Should i then Disable or Enable it ?

 

[Karadjgne]

Backwards. C-states start at 0, that being awake, 1 us when the monitors turn off and the pc starts thinking of shutdown orders, 3 is asleep, 6 is dead to the world. So what you'd want to do is disable C-6 and C-7. What are the options under CPU C-states support?

What exactly are the beeps? Is it 3 short, 4 short or 1 long 2short or 1 long 3short?

 

[79]

The states under CPU C States Support are "Auto", "Disabled" and "Enabled". It is currently set to "Auto"

The first thing i tried before your re-post was setting the C1E state to "Enabled", set PC to sleep then waked the pc, everything was ok, then tried the same thing 1 minute after, the error appeared again

 

[79]

After setting the C1E and C3 to "Enabled" and C6 and C7 do "Disabled", there aren't any beeps, however the screen is still black and a windows pop-up sound is heard through the speakers :/

 

[Karadjgne]

Ok. Goto windows / power setting. Look for the advanced button. In that you'll find a listing of several options for usb, sleep etc. Make sure sleep is enabled, but hybrid or hibernation is disabled. You'll also see more c-states settings, make sure there that Windows isn't over-riding the bios, should be set for c-4 or higher disabled.

 

[79]

The first thing i have done, when installed windows, was disabling the Hibernation completely via CMD and in power options to save up some space on my SSD.
Under the "Advanced Power Settings" i am not able to find any C4 state option :/

 

[Karadjgne]

It's no longer in Windows power settings, it is in Windows 7. It'll all have to be done through the bios