PCI USB 3.0 card problems please help!

shane waite

shane waite

shane waite

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Joined
28 Mar 2018
Posts
11
Hi,

Please someone save my sanity before I smash my pc with a brick! I recently upgraded my MOBO,CPU,RAM and PSU and since then have had nothing but problems. My USB sockets on the IO, front panel were having weird power issues dropping out randomly . To combat this I purchased a new PCIE usb card which initially worked fine but now disappears from my device manager after shutting the pc down , I have to physically reinstall the card into the mobo and it will work until the next shut down.

I have the latest BIOS drivers
I have a fresh install of windows 10
All windows drivers upto date
The MOBO is on risers in the case

The MOBO is a b450 mortar
CPU R7 3700x
PSU corsair 750x modular
ram x2 8gb 3200 corsair platinum

I know its not a psu issue I have tried with 3 different psu and I have the same issue, in the BIOS the only options for PCIE are to change it to RAID and to change the chanel I have it in the PCI_3 slot have tried the 4 slot my GPU does not have any issues whatsoever.

Not sure if this is relevant the card is powered by SATA twice the pc has booted straight into the bios and I noticed it did this because the BIOS didn't see any SATA devices i.e my two SSD's a restart solved that issue.

I have a new B450 on the way and a different USB card but I think I will get the same issue . Has anyone any ideas what this could be?
 
Check the motherboard manual and see if there is any interaction between M.2, PCIe lanes and SATA ports. Sometimes using an M.2 slot disabled some PCIe lanes or SATA connections.

Which slot do you have the USB 3 card in? One with lanes from the CPU, or provided by the chipset?
 
Hi ,

Thank you for your reply, im sorry I don't know how to tell that , on the B450 Mortar it has 4 PCI slots my gpu is in pcie 1 and pcie 2 is blocked by the gpu.I currently have it in PCI 3 which in the manual is PCIe 2.0 x1I have set the BIOS to use this slot however I have also tried PCIE 4 which the manual says is PCIe 2.0 x4 (if that info helps?) neither worked for longer than one restart then the card wont work again until I reseat it into the mobo. I also currently have no M2 inserted however the manual states aslong as I use pcie 3 I can use a M2 in the m2 slot 2.
 
I've had a hoast of issues with various hardware over the years caused by the "Fast Boot" option in power management, it seems to cause all sorts of issues most notably with my USB TV tuner stick >:(

Annoying thing is, I've noticed after the 6 monthly Windows updates it gets turned back on so I sit scratching my head for a while wondering why I can't watch tv!
 
Hmm the only thing I can think of is a PCI IRQ interrupt clash. I had a PC once that didn't shut down with a graphics card in its PCI slot. Changing IRQ settings fixed it.

Possibly try changing which SATA ports on the motherboard you use.

Try Dave Burton's advice above also :)
 
thanks for the replies lads, I tried the disable the fast boot and initially was excited as the card appeared in device manager but with a exclamation mark so progress, uninstalled as you would normally to get it to appear on restart and it vanished again never to be seen again lol. Checked IRQ and nothing is interrupting anything else. My new MOBO arrives today going to see if this issue is recreated if so im really at a loss
 
Sounds like the motherboard might be shorting out, first thing i would do is setup the motherboard outside of the case, remove everything except the minimum for the PC to boot and then see how you get on.
 
so tried setting up outside case same issue, while I was doing that my new mobo (same B450 mortar) arrived so went ahead and installed ...same ******* thing! now one thing that has changed since installing my old b450 mortar I always have a usb device unrecognised nothing would get rid of it . I asked my It tech guy at work to remote access the pc he reckoned it was something to do with the mobo but couldn't figure out what it was for it was their without anything usb attached even to the usb headers. so hopefully my usb power issues will now go so I don't have to worry about this pcie card. I have a new card arriving today maybe its a faulty card. im literally at the end of my tether and my hands are cut to ribbons constantly removing **** from pc cases!
 
ok so I got the new PCIe card installed and so far I think its working , and no usb power issues either so far so I think both the old MOBO and the old PCIe were bad
 
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