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If you have the internet, goto my computer and right click, then goto properties, enter device manager, goto sound,video and game controllers right click on the exclamation mark or your audio driver and click update driver, use the internet option to download the driver, it takes a few minutes so be patient. once done reboot the mechine.
This is a common porblem dude with c700 laoptop/../.
don't update your laptop.....kindly turn off all windows update... uninstall
all audio, hd modem, and UAA bux driver for high defination driver in
system device....restart your lpatop..go to hp.com and search following
no. for modem driver-(sp33442), for audio driver(sp35270), for UAA
driver (sp32395), download and install... and install drivers follow these steps:
Open device manager and right-click on Audio device on High definition Audio Bus. Select Install from a list of specific location (Advanced) Click Next Select Don’t Search. I will choose the driver to install. Select Sound, Game & video controller from the list of Hardware type Click on Have Disk Click on Browse and navigate to C:swsetupsp35270 and click on .ini file OK Click Next It will give you an update driver warning message. Click on yes. It will start installing the driver Click on Finish.. follow these steps to all drivers install.