eMachines E525 No Audio in Windows 7 64-bit

By default Windows installed High definition Audio drivers for this this model in Windows 7. In case there are no sound coming up from your eMachine 525, you need to update the BIOS.

1. Unduh this BIOS update:
BIOS_eMachines_3.04_A_A.zip (direct from Acer)

2. Extract, and run the exe file to flash the BIOS.

3. Restart and your sound should work now.

Installing Bluetooth Peripheral Device Driver

If you get an error when try to use your bluetooth headphone, speaker or pair your android with your pc, the solution is simple. You just need to install a Generic Bluetooth COM port driver, here is the steps:

1. Open device manager, look for Bluetooth peripheral device.
2. Right click on it and select update driver.

5. Click the second option: "Browse my computer for driver software"

6. Click to choose the option "Let me pick from a list of device drivers on my computer"

7. From the list "Common hardware types", Select 'Ports (COM & LPT)' If you don;t have this option, go to no8, and remember to untick "show compatiblw hardware if available.

 8. On the picture below.  Choose 'Microsoft' in the "Manufacturer" list, then 'Standard Serial over Bluetooth link' in the "Model" list

Click next.

9. A warning window pops up. Ignore it by clicking 'Yes'
10. Wait until installation finish and now your bluetooh should work.