Windows 10 doesn't power off or detect any USB 2.0 port following RAM upgrades

F5F Stay Refreshed Hardware Desktop Windows 10 doesn't power off or detect any USB 2.0 port following RAM upgrades

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164

02-15-2016, 03:10 AM

I possess an ASUS Z170-K + i7 6700 and previously increased the RAM speed to 3000MHz after it was limited to 2133MHz. I applied the XMP preset with CPU voltage set to 1.35V, switched PCIe speed to Gen2 and turned off VTd. After restarting, the American Megatrend BIOS displayed "NO keyboard detected." USB 3.0 devices failed to appear in both BIOS and Windows, so I relied on a USB 2.0 port instead. Initially I suspected a damaged USB 3.0 controller, but after resetting the CMOS via the motherboard pins, the 3.0 ports worked properly. However, 2.0 devices still didn’t function. The PC wouldn’t power off completely, so I had to press the power button to shut it down fully.

CROSSBOWWEAPON

02-15-2016, 03:10 AM #1

damore1405
Member

176

02-15-2016, 04:59 AM

I think the memory controller on the 6700 isn't handling that task.

damore1405

02-15-2016, 04:59 AM #2

I think the memory controller on the 6700 isn't handling that task.

tuthinoko
Junior Member

02-15-2016, 09:16 AM

Could you check if there’s a way to resolve this issue? Since the USB controller behaves unexpectedly, it might not be faulty entirely.

tuthinoko

02-15-2016, 09:16 AM #3

Could you check if there’s a way to resolve this issue? Since the USB controller behaves unexpectedly, it might not be faulty entirely.

Jithle
Junior Member

02-16-2016, 12:22 AM

Consider upgrading to a 8700K or newer model, which needs a new motherboard. Alternatively, activate XMP and then lower your RAM speed to a stable rate before saving. Check your RAM's stability using Memtest86.

Jithle

02-16-2016, 12:22 AM #4

CatBuggz
Member

248

02-16-2016, 02:58 AM

Yes, you can test the CPU controller using various programs. The PC remains stable because it likely has protective measures in place. If it still doesn’t work, check for software conflicts or hardware issues and try troubleshooting steps.

CatBuggz

02-16-2016, 02:58 AM #5

WoofWoofRun
Member

02-18-2016, 01:35 PM

Due to memory issues, turn on XMP and lower the RAM speed before saving it to a stable system.

WoofWoofRun

02-18-2016, 01:35 PM #6

Due to memory issues, turn on XMP and lower the RAM speed before saving it to a stable system.

Pickmaster12
Senior Member

710

02-20-2016, 11:10 AM

Consider adjusting both RAM and CPU speeds for optimal performance. Downclocking RAM alone may not be sufficient; pairing it with a CPU downclock can yield better results.

Pickmaster12

02-20-2016, 11:10 AM #7

Consider adjusting both RAM and CPU speeds for optimal performance. Downclocking RAM alone may not be sufficient; pairing it with a CPU downclock can yield better results.

Cidyy
Junior Member

02-20-2016, 01:09 PM

Only the RAM is used, but it has XMP enabled. The memory controller handles communication between the RAM and CPU, yet your RAM is too fast for it to manage effectively.

Cidyy

02-20-2016, 01:09 PM #8

Only the RAM is used, but it has XMP enabled. The memory controller handles communication between the RAM and CPU, yet your RAM is too fast for it to manage effectively.

Exteur38
Member

02-22-2016, 04:25 AM

RAM speed is now 2133MHz, but your motherboard only supports up to that frequency. Should you still proceed?

Exteur38

02-22-2016, 04:25 AM #9

RAM speed is now 2133MHz, but your motherboard only supports up to that frequency. Should you still proceed?

aleix56
Member

02-22-2016, 08:07 AM

#10

It looks like you got the instructions mixed up. First, turn on XMP in the BIOS settings, then reduce the RAM speed while XMP is active.

aleix56

02-22-2016, 08:07 AM #10

It looks like you got the instructions mixed up. First, turn on XMP in the BIOS settings, then reduce the RAM speed while XMP is active.

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