Intel Motherboards - Error 99 when DVI connected

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Error 99 when DVI connected

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=3179
Printed Date: 20 Jul 2025 at 12:57am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Error 99 when DVI connected

Posted By: wsoldier
Subject: Error 99 when DVI connected
Date Posted: 03 Aug 2016 at 11:58pm

Just built a new system with the Extreme 7+ Z170 motherboard and my existing Gigabyte GTX 1070. However, when I plug in my secondary monitor using DVI (it's the only option), the system won't post and the motherboard displays error 99 on the LEDs. If I unplug the DVI cable to the second monitor, everything boots fine. I'd been using the 1070 for a month with no problems on my prior system.

Any ideas/suggestions?

Thanks!

Replies:

Posted By: wardog
Date Posted: 04 Aug 2016 at 2:14am

Two things come to mind here.

First being is your PSU, w/o any 4-pin molex adapters in use, natively have an 8-pin motherboard power connector AND also native 6+2 PCIe with which is powering the card itself?

Second is, are you running the latest and greatest BIOS, 3.10, just released yesterday on Aug 2 2016?

Otherwise, with the above two considerations addressed it may need a BIOS update to accommodate the 1070, which itself isn't unheard of with new video cards.