Error when connecting SD card: "Please insert a disk into Removeable Disk (G:)"

[ThumperStrauss]

When I insert an SD card into the multimedia SD card reader, the Windows 10 pop-up message says: Please insert a disk into Removeable Disk (G:).  In other words, the multimedia card reader detects the card and the little green light turns on on next to the card slot. But Windows 10 (Home, version 1803, build 17134.345) is having a problem reading from the card.

What I tried so far

1. I tried a different SD card. Same result.
2. I connected my camera to my HP wire a USB wire and was able to successfully transfer the photos from the SD card that way. So, problem is not the SD card(s).
3. Went to Device Manager and uninstalled Standard SATA AHCI Controller. Restarted PC. When back to Device Manager and it was active (no yellow warnings). Tried to insert SD card. Same result.
4. I visited the downloads page for my HP (https://support.hp.com/us-en/drivers/selfservice/hp-pavilion-p7-1400-desktop-pc-series/5295962/model...) but didn't see anything for the multimedia card reader. In any event, there is only software for Windows 8 and Windows 8.1, not Windows 10.

[DGroves]

https://support.hp.com/us-en/document/c03520500

the card reader is treated like a hard drive in reguards to drive lettering, and windows 10 by default hides the assigned drive letters that it assigned to the card reader drives

windows 10 has builtin drivers for many card readers, but if your card reader was made after win 10 was released, or a older model, it might require drivers. a simple way to determine this is to visit the HP driver page for your model computer, and if no card reader drivers are listed, then the drivers are built into the win 10 OS which is the case for your model computer

since you do not say which SD card type you have i can only comment that many card readers will allow the card to be installed upside down, or not fully inserted, or placed into the wrong slot, or the slot can support two diffrent SD card types with one card type using only half of the slot

a example is my personal card reader that has a dual SD/xD slot, the SD card uses the full slot and the xD card only uses the right half, and if i'm not careful i can insert the xD card wrong

just because the green light comes on does not mean that the card is fully inserted (but it's a good start)

i recomend you make sure you are using the right slot, and that the card is properly inserted, if it is you will hear a sound when the card is inserted, and the icon should show

the SATA AHCI controller is for Hard drives/SSD's and has nothing to do with your USB based card reader

last while HP only sold this system with win 8, it has no problems with the windows 10 OS