Inspiron 24 5475 (touch not working, bluetooth not working, webcam not working)

Windows 10?

Did you install all the drivers?  Open Device Manager and see what's marked with an error.  If you see any "Unknown" entries in Device Manager, right-click and Uninstall all of them. Then click Action>Scan for hardware changes and see if that helps.

Win 10 drivers:

1. AMD Chipset - Typically should be installed first. Other drivers may not install or may not work unless the chipset driver is running.
2. Qualcomm QCA61x4A and QCA9377 Wi-Fi and Bluetooth driver
3. Realtek IR Camera driver
4. AMD Radeon RX 560, 580, and R7 graphics driver

BTW: Was Dell Touch Screen Firmware update utility ever run on this PC? It's a one-time-only, so it shouldn't need to be run again if previously installed...

@RoHe​ 

hi thanks for the reply.

and yeah I’ve installed all the drivers for it but nothing.

webcam isn’t seen in device manager Bluetooth isn’t there either. And the touch appears dead.

ive not run a firmware tool for the touch should I find it and run it ?? 

Sure you didn't accidentally disconnect a connector(s) on motherboard while replacing the battery?

If a touch firmware update was available for your PC, it would be listed on it's support page, besides, touch is a Windows function. Read this for touch screen troubleshooting

Any "Unknown" devices listed in Device Manager?  Is the WiFi card seen in Device Manager?  WiFi and BT are on the same Qualcomm card.

Try this:

1. Disconnect power cord from rear of PC.
2. Press/hold power button for ~30 sec.
3. Reconnect power cord to rear of PC
4. Boot up and test BT

When you replaced the motherboard battery, did you press/hold PC's power button for ~30 sec after removing the battery, before installing the new one? That would assure BIOS was fully reset to its defaults and remove any corrupted settings.  So possibly one of those defaults isn't correct for your hardware.

Dell typically ships PCs with SATA Mode (SATA Operation) set to RAID in BIOS, even though the default setting is AHCI.  So look in BIOS setup to see how it's set, but don't change this setting...

@RoHe​ 

hi thanks for the reply I disconnected the camera cable again and reconnected it and now that’s working.

as for device manager there is nothing in there as an unknown device.

but Bluetooth is still missing I didn’t do the 30 second thing on the power button.

but I’ll try that next.

as for touch it’s still not existent.

so will double check it’s cable is connected as I would assume if it has a cables called touch that would be the one ??

thanks

jason

@RoHe​ Holding the power down for 30 seconds did nothing.

and after doing that the webcam no longer works again.

could I have a bad system board ??

bluetooth is still missing.

Sure the new motherboard battery is fresh, installed correctly in its socket, with positive-side facing up? Was PC unplugged while you pressed the power button and then camera stopped working? 

Did BT start working after holding the button?

Did you run the touch screen update?

Touch is a Human Interface Device, so open Device Manager and expand the HID list. If touch is listed, double-click it, and assuming there's a Power Management tab, make sure the box "Allow PC to turn off.." is not checked.  Reboot and see if that helps. 

Otherwise,

@RoHe​ 

hi thanks again for the reply.

BT didn't start to work still its as if it don't exist.

webcam become disconnected from the PC after I rebooted it.

and also ive checked the CMOS battery it is a new one and installed correctly.

ive run the touch screen update and it says its not supported ??

I will check with the dell support and diagnostic option and post back my findings.

I'm wondering if somehow the webcam cable has gotten damaged ???

also why would the BT not work ? its part of the wifi card I believe ??

asa for the touch well its connected via a cable to the motherboard. but its as if its not there any longer.

thanks again

jason

Are you sure the AMD chipset driver is installed?

Did you run the online diagnostics for camera, touch, and BT, as I posted above?

Manually set a System Restore point to be safe. Assuming touch is listed in Device Manager, right-click it and Uninstall. Then click Action>Scan for hardware changes and see if touch reappears and works now...

Look on Bluetooth and other devices screen in Win 10 and confirm that BT is turned on there. Then look on Airplane Mode screen and confirm Airplane Mode is turned off and BT is turned on there too.

It's also possible the BT part of the card failed, even though WiFi is still working. You could try reseating the card in its slot on motherboard.

You might want consider getting a USB>BT dongle which may be less expensive then replacing the entire WiFi+BT card.

@RoHe​ 

hi thanks again I’ve run the diagnostics Bluetooth isn’t an option there and neither is the webcam.

also touch isn’t detected in any form either.

could it be a hardware issue ??

thanks

jason

p.s I will try removing the wireless card and placing it back in the motherboard.

Can't rule out a motherboard failure...

If reseating WiFi card doesn't help, you could try resetting BIOS to its defaults:

1. Reboot and tap F2 to open BIOS setup
2. Copy down all current settings to be safe
3. Go Exit tab and choose option to Load Defaults, and exit setup
4. Test again...

@RoHe​ Hi Ron

thanks for the reply ive looked it up on YouTube and noticed its a common failure for the PCH to go bad.

and that's what I think has happened here.

ive reset the bios and several things ive also reseated the WIFI card and still no bluetooth.

ive also noticed that dell was aware of the issue.

but any idea where I can source a motherboard or if dell would carry one any more ???

thanks

jason

Can I assume you recently reinstall the camera driver? 

Trouble is, you don't know if it's the motherboard itself, or the I/O board.  With all its the issues, it might be the I/O since PC still boots.

Would you be better off sending PC to Dell's Out Of Warranty Repair service? Don't know how much they'd charge but might be worth investigating. 

You'd have to do a web search for a motherboard, but make sure it's guaranteed working and comes with a reasonable warranty.

And only you can decide if and how much to spend fixing a PC that's ~6-7 years old...

Glad another board works. Wonder if the old one somehow got damaged when you replaced the drive, or possibly the failing drive zapped the motherboard... ?

Win 10 will be supported until Oct-2025 so you've got time to keep using this PC.