Question PCIe gen 3 x4 M .2 slot no longer working after unplugging PSU ?

[Ryuga Roxas]

I have my OS installed on a nvme m.2 , which was installed on the first slot of my mainboard z390 .

After unplugging my PSU cable then plugging it back , I can no longer boot into Windows. Then while in Bios, i suddenly realized that my PC can't detect my NVMe SSDs or other drives that I have ( HDD, SSD SATA )

However when I moved my M.2 NVMe SSD to the 2nd PCIe gen 3 x 4 slot, my PC suddenly recognized it , I can boot into Windows, other drives can be detected too .

I tried installing my nvme back into the 1st slot but it's not detected as before.

Can anyone help me determine this issue. Could it be that unplugging PSU cable damaged my m.2 slot somehow ? I have made sure to turn off the i/o switch on the PSU before unplugging .

Windows 11 pro 23h2 all updated.
MSI RTx 3090 suprim x
Corsair vengeance rgb rs 32gb
Aorus Master z390 bios f12
Corsair rmx 850 shift
I9 9900k

 

[Lutfij]

Make and model of your M.2 drive? Replace the drive in the first M.2 slot, clear the CMOS and see if that helps. TO do so, disconnect from the wall and display, then remove the CMOS battery. Press and hold down the power button for 30secs, then replace the battery after 30mins.

 

[Ryuga Roxas]

Make and model of your M.2 drive? Replace the drive in the first M.2 slot, clear the CMOS and see if that helps. TO do so, disconnect from the wall and display, then remove the CMOS battery. Press and hold down the power button for 30secs, then replace the battery after 30mins.

My M.2 is Intel 660p . Lemme test and report it back

 

[Ryuga Roxas]

My motherboard has 3 x M.2 slots . For some reason when plugging in my GPU , the first slot is rendered useless . How can i fix this ?

 

[Satan-IR]

Please provide full system specs.

Do you have a Z590 board with a 10th gen Intel CPU by any chance?

Some chipsets and motherboard designs share bandwidth with between the PCIE slots and the M.2 slots. Some share bandsidth with SATA ports.

If you have a board wchich is designed to share bandwidth of M.2 slots with the PCIE slot used for graphics card populating the PCIE slot with a card or populating some of the SATA slots might disable one or more of M.2 slots.

Might be some option in BIOS that lets you choose which M.2 slot to disable when using the PCIE slot with a graphics card.

 

[Ryuga Roxas]

Please provide full system specs.

Do you have a Z590 board with a 10th gen Intel CPU by any chance?

Some chipsets and motherboard designs share bandwidth with between the PCIE slots and the M.2 slots. Some share bandsidth with SATA ports.

If you have a board wchich is designed to share bandwidth of M.2 slots with the PCIE slot used for graphics card populating the PCIE slot with a card or populating some of the SATA slots might disable one or more of M.2 slots.

Might be some option in BIOS that lets you choose which M.2 slot to disable when using the PCIE slot with a graphics card.

Z390 aorus Master
Rtx 3099 suprim x
I9 9900k
Corsair rmx 850 shift

I only have 1 m.2

I can use the first slot just fine with the same GPU for many months but today after shutting down my PC, unplugging PSU. Then replugged it , turned on pc , my first m.2 slot can no longer be used if i plug in my GPU

 

[Satan-IR]

See if you can see the M.2 drive in BIOS with the GPU?

 

[Ryuga Roxas]

See if you can see the M.2 drive in BIOS with the GPU?

When i plug in GPU I can't see the drive in bios . I can't see other drives either

 

[Satan-IR]

Have you recheked all PSU to motherboard connections including the 8-pin (4+4pin) form PSU to the header on the motherboard?

Is the BIOS the latest version? Are all chipset drivers installed?

 

[SkyNetRising]

I can use the first slot just fine with the same GPU for many months but today after shutting down my PC, unplugging PSU. Then replugged it , turned on pc , my first m.2 slot can no longer be used if i plug in my GPU

Did you do anything other than just unplugging/re-plugging PSU?
Like - removing cpu from socket? and accidentally bending some cpu socket pins in the process?

 

[Ryuga Roxas]

Have you recheked all PSU to motherboard connections including the 8-pin (4+4pin) form PSU to the header on the motherboard?

Is the BIOS the latest version? Are all chipset drivers installed?

What do u mean re check . You meant see if they still work or they're defective or they're simply not connected

My bios is latest . All chipset installed

 

[Ryuga Roxas]

Did you do anything other than just unplugging/re-plugging PSU?
Like - removing cpu from socket? and accidentally bending some cpu socket pins in the process?

I didn't do anything else . I could be wrong but maybe i could have press the power button a few times while the PSU is unplugged cause i was trying to do a power cycle

I didn't touch my CPU, I just did a power cycle and my drive just disappear out of the bios

 

[Satan-IR]

What do u mean re check . You meant see if they still work or they're defective or they're simply not connected

My bios is latest . All chipset installed

Yes recheck if everything from PSU is properly connected to mohterboard and anywhere else it should and even unplug/re-plugging the cables headers to and from PSU etc. But you said you just unplugged the PSU.

I meant to ask you too if there's been anything done to the CPU (taken out of socket and put back in or nenew thermal paste or something like that ) or if you took RAM out of slots and reseated them.

If you didn't touch CPU and other components and only unplugged and replugged the PSU I can't really think of anything else.

Last resort for me when motherboards start acting like this is change the CMOS battery. I've seen some boards act strange when the battery is drained and needs changing.