Sound doesn't work in Windows 7

[majcy30]

Hi guys,

I'm new here but i had been doing a lot of serch but it seem i can't find anytihng to fix my problem. And thought i don't know much aobut computers.
Well i have laptop aspire 7520 and I just got windows 7 on (i bought it with vista). It worked fine when just before days my sound doesn't work anymore. On sound icon is red cross and it say "no audio input device is installed".
i tried to update sound in Device manager but it's just not there. Only thing i found was system speakers and for that it said there is no driver and i couldn't update those too.
I installed driver from acer site but it just look like it isn't there on my laptop. I'm alredy hopeless

I appriciate any kind of help,

 

[Jonathan_King]

Welcome!

First, could you have a virus? Please download Malwarebytes free and do a scan.

Also try a System Restore to a point before the problem arose.

Hope this helps,
~JK

 

[majcy30]

hi

thanks for help. I did like you said but i didn't have any virus and system restor also doesn't work. So my sound still not working

 

[Jonathan_King]

Please download Speccy and find your sound card. Perhaps we can find drivers for you.

 

[majcy30]

umm ok

sound card is Realtek high definition audio

 

[Jonathan_King]

Try downloading drivers from here: http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PFid=24&Level=4&Conn=3&DownTypeID=3

 

[majcy30]

i did downloaded but there's no diffrence my sound still doesn't work besides why there isn't any sound driver in Device manager?

 

[Jonathan_King]

I don't know. Almost sound like a hardware issue to me. Perhaps something is loose inside your machine, or you have a bad motherboard. Neither of of those are easy to diagnose/fix, so I guess just wait for others to help. I will call the other Gurus to this thread, if you would like.

 

[majcy30]

I would appriciate any help it's really hard being all the time in silence
and thanks anyway for your time

 

[Bare Foot Kid]

Hello majcy30, welcome to Seven Forums!


I had an HP machine that would lose sound and I used to fix it by going to Device Manager and uninstalling the sound device, try that to see if Windows 7 will add a driver for it.

 

[Lordbob75]

You should try the motherboard drivers if you already haven't.

The Realtek HD audio is built into the mobo, so it needs their specific driver.

~Lordbob

 

[majcy30]

hi bare foot kid

well the problem is that there is no sound, video and game controllers icon. i had before but since my sound doesn't work it just disapeared

hi Lordbob

um i'm little confuse about this motherboard drivers. Where i can find it?

 

[Bare Foot Kid]

Hello majcy, did you try what I suggested?

 

[majcy30]

hi
umm no because in Device manager there's no sound driver

 

[chev65]

hi
umm no because in Device manager there's no sound driver

Can you go to Start/search and type cmd then right click the little command icon above,right click and run as admin.

The Dos prompt will appear. Then at the blinking cursor type sfc/scannow >enter which will look for any missing files you might have lost. It will take some time to complete the scan.

For drivers try the Acer site, just choose notebook,aspire then 7520, then choose your Op system. You might try reinstalling the chipset drivers or audio drivers if you can find them.
http://support.acer.com/drivers_download.aspx

 

[computersplus]

ACER

is yours a 7520 or a 7520G the standard 7520 does not show audio drivers for 7 but the 7520G does here is a link to Acer site drivers for 7520G

Acer Europe - Service & Support, Drivers & Utilities, Downloads

 

[majcy30]

is yours a 7520 or a 7520G the standard 7520 does not show audio drivers for 7 but the 7520G does here is a link to Acer site drivers for 7520G

Acer Europe - Service & Support, Drivers & Utilities, Downloads

hi, it's 7520 standard

 

[majcy30]

hi
umm no because in Device manager there's no sound driver

Can you go to Start/search and type cmd then right click the little command icon above,right click and run as admin.

The Dos prompt will appear. Then at the blinking cursor type sfc/scannow >enter which will look for any missing files you might have lost. It will take some time to complete the scan.

For drivers try the Acer site, just choose notebook,aspire then 7520, then choose your Op system. You might try reinstalling the chipset drivers or audio drivers if you can find them.
Acer Support - Download Drivers

hi
i tried both. First it said everything is ok and second it just didn't work

 

[valtonray]

open your laptop chassis and remove the cmos battery for 10 minutes. maybe this will help maybe it won't but occasionally afterward it will find all of your hardware again, then you can proceed to make sure the drivers and everything else is set.