Please help about my computer ?

My computer voice doesn't work recently , and in the hardware overview of my computer ( divice manager ) two objects are yellow ticked : SCSI / RAID CONECTOR and UNKNOWN DEVICE .

how can i repair it , need your help !

Please help about my computer ?spyware remover

First always check the connections in the back of the PC.

Try rebooting your computer - if that doesnt work try reinstalling the sound drivers.

Please help about my computer ?virus removal

Do not system restore, it is too late. That should be done in steps as your content grows.

Control panel, system information. In tools scroll to direct x and run the diagnostics function. It will test the voice and all other functions of the computer. You can trouble shoot your problems as well.
for a start, i dun think u use scsi/raid so u could safely ignore that. but if u want, u could try installing the drivers from the cd that came along with ur mobo. as for the unknown device, its hard to guess. u could try going to windowsupdate.microsoft.com ... if u are in luck, u could get the drivers for the unknown device there. if i had to guess, i'd prob say u need to try reinstalling ur sound card and modem (if u have one) drivers
First try a system restore. Then update the video drivers.
Drivers need to be set for your hardware
the SCSI controller, u dont need to worry about that