Z170 Pro4S does not give post/video signal
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=2851
Printed Date: 21 Jul 2025 at 2:33am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z170 Pro4S does not give post/video signal
Posted By: devcookie
Subject: Z170 Pro4S does not give post/video signal
Date Posted: 16 Jun 2016 at 10:41pm
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First of all, thanks for reading this. I just bought myself an entire new build yesterday and ran into some issues. (specifications below) The motherboard does not seem to give a POST or any video signal, my screen remains black. I've tried without a gfx card, falling back to on board Intel graphics, but that didn't work either. I've changed the RAM from the preferred positions (A1 and B1) to the secondary position, all to no avail. Then I've tried to use only one memory stick, but that didn't have any results either. I've tried to install an onboard speaker to listen for the beeps when booting, but I haven't heard any either. Not sure if I wrongly placed the speaker, but I installed it in the Power LED and Speaker Header (SPK_PLED1). This questions whether the motherboard actually works. (EDIT: When I place no RAM memory in the slots at all, I get 3 short beeps in a continuous loop, so the speaker works.) I've disassembled the CPU cooler and processor, looking for hardware issues with the CPU socket, but I haven't found any broken connectors/pins or anything remarkably broken. I've also checked the 24pin connector whether it was plugged in completely, also checked the extra 8 pin connector at the top of the mobo. Everytime I changed memory configurations, I also cleared the CMOS by moving the jumper from pin1+2 to pin2+3. When reset completed, I changed it back of course. The only thing I can now think of is that something is not supported or malfunctions/is broken. I suspect my RAM could be not supported, but I do not want to buy another set of sticks when the problem is something else entirely. The mobo requires SDRAM-DDR4 and the sticks I have apply to this requirement. Also the speed of those sticks are compatible with the requirements, but I can't find it in the memory list of the product page. The only thing I could think of would the an incorrect memory bus speed of my RAM, but I can't find any specifications on required RAM bus speed for this mobo. My build specifications: Motherboard: ASRock Z170 Pro4S CPU: Intel i5-6600K GFX Card: MSI AMD R9 390X 8GB RAM: Corsair Vengeance LPX 2x8GB 2133Mhz (Modelnr: CMK16GX4M2A2133C13) PSU: Corsair CX600M CPU Cooler: Scythe Mugen 4 PCGH SSD: Crucial MX200 250GB HD: Seagate HDD Desktop 2TB 7200rpm Any help would be greatly appreciated, I'm a bit desperate at the moment!
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Replies:
Posted By: parsec
Date Posted: 17 Jun 2016 at 8:27am
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Your memory being compatible is not certain, a similar model is listed in your board's memory support list. Corsair lists is as compatible with Intel 100 series boards like yours, but that model is not listed in your board's memory support list. So this remains somewhat uncertain. BTW, the preferred location for two DS (Doubled Sided) DIMMs is the A1 and B1 slots, if you have confirmed your memory is DS. Being 8GB DIMMs, they probably are DS. Otherwise the A2 and B2 slots have priority. Your memory will by default operate at a compatible speed for your board, 2133 or possibly 1866. You should not need to select a memory speed at all. Only DDR4 memory would fit in your board's memory slots. One thing to try is using only one DIMM, in the B1 slot. One DIMM is easier for the memory controller on the CPU to deal with, if the memory is only semi-compatible. If you got three beeps with no memory installed, that means the POST process was running, and the lack of memory was detected. Which means the board is working. If you connect a network cable from an active router to the network jack on the board's IO panel, you should see the LEDs next to the network jack light up. If you don't, that would indicate a board problem. Have you used your PSU in the past, or is it new and unused? It sounds like you have both the 24 pin and 4/8 pin CPU power cables connected, both are required for the board to start. I would stay with the Intel graphics at first, one less variable to deal with. What type of cable are you using for your monitor, and is it set for that type of input? The only thing I can suggest is removing as much as possible from the board, such as any drives and any other devices. You don't want to install Windows with more than one drive in the PC anyway, but disconnect power from all drives as a test. Use a simple wired keyboard and mouse if possible. One DIMM in the B1 slot. Clear the UEFI/BIOS again, and see what happens. If POST completes you will get the single short POST Ok beep. ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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Posted By: devcookie
Date Posted: 17 Jun 2016 at 11:47pm
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Thanks @parsec for your assistance. I ended up buying myself some RAM that was listed on the memory list on the product page of the motherboard. I now have some Kingston Hyper X Fury running at 2666Mhz (also dual 8GB DIMMs). It appears this solved the issue of having no POST. Might be an important notice to other future buyers that not all DDR4-SDRAM is supported, and they need to have a look at the memory list on the product page first, before buying any RAM. Thanks again for your help!
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Posted By: ugghauggha
Date Posted: 26 Oct 2016 at 10:16pm
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Hi there, i didnt wanted to start a new thread cause your posted problem matches mine too. I have a I5 6500 Asrock z170 Pro4S newest Bios 7.0 And the funny thing is, i started with the HyperX Dual kit u mentioned as workable for you. And i ended up that no Slot were working anymore and i got no visual Signal from my gpu same for the intel gpu. I did like all Variations and Flash scenarios but the board started only, booted but this was it, even if i waited for a longer Time. So i couldnt enter the bios anymore. Now i have a new pro4s and i dont want mess it up again. I have the same kit and if i put both sticks in the pc starts to boot and end up in a boot loop with the fans running high and low, and thats it. With only 1 Stick np. It would be nice if u share some thoughts for my problem or can give me ur bios setup. |