Tip: Always supply the make and model so the first question to you is not for that info.
As to the restriction I strongly suggest you stop letting others use your PC. There is no assured way to restrict access in Windows.
After a friend messed with the control panel because there was no sound, my computer is now saying that there are No Audio Device and when I run games it says the audio driver is currently used by another prog and there' no volume icon.
reinstalling the sound driver didn't work. Not sure if relevant: when I restarted after the install, it stopped (hanged) when the AV was starting for about 5 minutes (it never takes this long for NOD32 to start up) it was fine afterwards though. NOD32 scan said computer was clean though.
It says no "Audio Device detected" but also says "working properly" for the drivers and such.
but in device manager, 2 things had the warning icon
1) PCI Simple Communications Controller
2) Microsoft WINMM WDM Audio Compat. Driver
I forgot to mention that in all of my browsers (IE,FF,Opera and even a portable FF), some images don't appear (mostly background images missing). So if I go to google, the logo doesn't appear on all 4 browsers? but if I go here I see the PC Pitstop logo but everything else doesn't have color. How can I fix this?
and is there anyway to restrict the guest acct so that they can't access the drivers.