Hi,
Got an Asus Z270-WS and depending on which setting in bios is set one way or the other the system will take three - four attempts to post and load windows. I discovered that this is related to the PCIEX4 X2/X4 setting under onboard devices in bios. If set to X4 the system will boot right into Windows no issues. However the downside to that is all of a sudden I noticed that I have a usb port that has failed enumeration and can not start. If I set PCIEX4 to X2 operation that turns on my front panel USB 3.1 controller and that unrecognized failed usb device goes away but it will take like 3-4 attempts to start up cold. Warm boots start up fast. So as far as I'm concerned this is either a defective chip on my motherboard causing this or a flaw with the bios and how it manages resources. Should note I have dual M.2 raid enabled and a U.2 device on U.2_2 and a PCIE NVME drive on the PCIEX4 slot. Frustrating. Whats the point of having a workstation class motherboard if it chokes on all your devices. Anyone experience this and have any suggestions?
Thanks.