After new motherboard install - usb ports - dvd drive; ect not working  

I am an absolute newby at this , so my apologies in advance, if I did stupid things - I google and do what people had found to work in the past.

FYI: got all the drivers from the Acer website and installed them - there is no exclamation marks in device manager, all drivers installed and working properly;

My wife's Acer laptop's mobo blew - PC tech said to expensive to replace - I got one and replaced it myself - took to PC tech, because it did not turn on - he checked all the connections after which it booted into windows, BUT:

1. usb3 and usb2 ports not working - not in safe mode, nor after uninstalling all the drivers from the universal serial bus controllers and getting them to reinstall by restarting windows.

I then reinstalled Windows - no luck.

2. Blu ray DVD RW - sees dvd [ data - had drivers on it ] as empty - all 4.7GB of it, although my Asus laptop reads it perfectly well; checked and found that a DVD movie did not play as well. It could see the windows cd for the reinstall?!

3. No sound, although if I click on the speaker icon in the taskbar, I can see the green bar moving up and down, but no sound.

4. Bluetooth button not swithing on.

Any suggestions of what to do next?
Thank you.

On many laptops, the USB ports are on separate (small) boards, that connect to the motherboard with a cable.
If the technician did not plugged those cables in, the system will show that all ports are functional (on the motherboard), but you will not be able to access any of them .

Can you provide us with information about the ACER model you have?

Also in addition to George's excellent advice, check that the USB header cables are plugged in the correct ports and oriented correctly - Anything that uses a cable with any play, (almost all), can be wronhgly connected to modern motherboards which have a large number of similar Ports.

the most difficult thing in this sort of troubleshooting is Knowing what the connections should be - most suppliers do not supply layout diagrams for laptops as the consider them as consumable systems, which are unlikely to be upgraded or even repaired in their expected three year life span

However you may find a diagram on line either at the manufacturer site or even on a google image search- otherwise a magnifying glass and a good light may find some annotations on the MB itself

Check the sound with earbuds in case the internal speaker was not connected. You may need a separate standalone movie player (such as VLC media player) to view a blu-ray DVD. Bluetooth button probably requires a software driver to activate it - I recently went through this on a Samsung lappy (you'll need the drivers from Acer for that).