|Please answer ALL questions, supply ALL the info asked for, and comment about anything else I say in this that you want to. |
Is this PC a laptop or netbook, or is it a desktop computer ?
What make and model is it ?
Are you seeing the normal main desktop screen otherwise ?
Have you installed Windows from scratch since the last time the sound worked ?
Are there other things you normally see on the main desktop screen that are missing or that are there but are not working ?
Are there other symptoms you haven't mentioned ?
E.g. is there one of more icon(s) on the desktop screen for something that you did NOT install yourself or that software you installed did NOT install, that works when you click on it ?
Were you having problems previous to this happening ?
What was going on before this first happened - e.g.
- what did you do, or what did you install, the last time Windows was working fine before this happened ?
- did this happen after you accessed some web site on the internet and got an unexpected result ?
Have you tried loading Windows's Safe mode ?
Remove any bootable CDs or DVDs in drives
Press F8 repeatedly, don't hold down the key, while booting the computer, starting very early in the boot sequence, and when the Advanced... Windows menu appears, choose Safe mode, or Safe mode with networking if you want to be able to access the internet.
(On some computers, the bios has it's own use for F8 - e.g. a menu may pop up where you can select a device to boot the computer from. If you see that, READ the info on the screen to determine which key you press to exit that screen, e.g. Esc. Press that key, then immediately press F8 repeatedly, don't hold down the key.)
If you're not familiar with Safe mode (without networking), when it works properly, you see a screen filled with lines that show which programs are loading, then it stays that way for the last screenfull for as long as a minute or more, then the Logon screen appears with at least the built in Administrator user and your user listed, you pick a user, then the desktop screen loads, a large window pops up and you are asked if you want to run the computer in Safe mode or choose something else. (Whatever you choose, you can run System Restore to load a previous restore point.)
If something is wrong with Windows, that may not work properly.
- If you WAIT longer when you see the last screen full of lines, Safe mode MAY proceed from there fine.
- The computer freezing forever at the screen filled with lines that show which programs are loading doesn't necessarily indicate the last line listed on the screen is loading the program that's is causing your problem with Safe mode, but something is definitely wrong with Windows.
You MAY have malware (a virus, trojan, root kit, etc or more than one of them.) infecting your computer.
Malware often doesn't load in Safe mode. If it does load, there are usually fewer symptoms, and I have never encountered malware interfering with you being able to get to the desktop screen in Safe mode, and it probably wouldn't.
The screen resolution setting has nothing to do with your problems.
If you have an LCD, LED LCD, or Plasma monitor or display on a TV, it has ONE "native" or "optimal" resolution that it looks the best set to. All other resolutions will NOT look as good, the cheaper you monitor or TV model, the worse it's likely to look, the most noticeable thing being the text on the Windows screen will NOT be as clear as it is when you use the "native" or "optimal" resolution.