I had Acer Aspire 5742z-4629 lap i am searching for bluetooth driver. i had't get any solution so pls say how to fix this problem

Okay,
Go to: http://download.cnet.com/windows/3150-20_4-0.html?listType=2&sort=editorsRating+asc
Download CCleaner, Malwarebytes run Malwarebytes first
and of course Ccleaner. run all scans in Ccleaner registry, cleaner and in tools check startup and disable anything you don't want to start up at boot. after all scans are done reboot system. Oh! in Malwarebytes be sure to tick all boxes ( R/click on any one and select check all) and delete!
Hope this helps!

You can get all the acer 5742Z drivers from this web :
http://www.acer.com.au/ac/en/AU/content/drivers
Get your correct model of your bluetooth and download the drivers. There are two different model of bluetooth model which is atheros and broadcom

Yes. Download Bluetooth drivers and install. it work...

if its the drivers you need

http://download.cnet.com/bluetooth-driver-ver-5/3000-2110_4-149801.html

http://download.cnet.com/bluetooth-software-ver-6/3000-2108_4-162222.html
if these packages are not the right
http://download.cnet.com/2000-20_4.html
on the home page you should see a search tab just type in what you are looking for
EG: motherboard name bluetooth or device name drivers you might have to try a few times to get it right

hope it helps

Just Press FN+F7 ... it will work.. if not , then reinstall your mouse driver....

If your don have your original motherboard driver, purchase the USB bluetooth. Connect it on your computer and search Bluetooth Device .... you will find the right solution thanks...

Un-install the present driver and re-install the driver....

plz follow the below link to install the driver....

http://drivers.downseeker.com/download/23549/acer-aspire-4530-notebook-bluetooth-driver-v5.1.0.4200/

thank you

Please visit the following Link and download all the Drivers you need
http://www.driverstools.com/acer-drivers/driver-acer-aspire-5742-notebook-for-windows-xp/
After Download Run the .exe / Setup files to install the files.

If you feel that my answers have helped you getting solution to your problems then please give a vote.
Thanks

Go to device manager, find the webcam, right click, and go to properties, driver, and click update driver. Tell it yes to search online.

Maybe the drivers are not installed. On the other hand, there's a possibility that it doesn't have any bluetooth function, check the box for the specs and features usually bluetooth is optional.