Windows Audio Service Unique behaviour

hi everyone,

I am using HP 1000 notebook PC ( Core i3 ) with Windows 7 Ultimate x64.

The problem is that when i start my laptop windows give a wellcome sound but after that windows audio service seems to be down because if i play something i can't. Wmp just says cannot play file.

So i have checked the audio service from Services.exe.

Its status is started and set to start automatically.So it shows that service is running but its not.

And strange thing is that when i just refresh Windows Audio Service everythings works good for almost 1 hour and then again wiothout any notice or change in service status it stops working.

So when i keep refreshing service it keeps working.

Please guide how can i make audio playback remain good ?

Thank you.

Thank you for guidance.
Yes i have checked that the Sound in Control panel shows Speakers and HDMI but it says HDMI not plugged in.
and also in control panel there is Realtek HD Audio manager.
So what can i check now

Oh yes i forgot to mention i checked that too.
The device is working properly.and i updated the latest audio driver 2 days ago from the Windows update.
Do i have to do it manually from hp website or is it good from the windows update method too ?

well i have reinstalled the realtek hd audio driver that i got from from the hp website but the problem persists.
By the way when i just uninstalled the audio driver ,windows itself installed its HD audio driver that was working fine all the time so now after reinstalling driver i again uninstalled it and again windows itself installed its own hd audio driver after restart.
Now that window's own driver works fine.
Please guide what should i do ?
Can i keep working without realtek driver or not ?
The only difference when i install the realtek driver is that a realtek audio manager appears in control panel (and the problems comes again) otherwise windows has picked the hd audio device itself and is running it good and sound quality also looks good.
please guide.

Ok thank you very much for kind guidance.let me use it for sometime ,i will report performance in after sometime.

i have also same issue like your's bro.