Computerhilfen.com: svchost.exe application errors

OS: Windows (http://www.computerhilfen.com/explanation-w-Windows.html) XP

I keep receiving an scvhost.exe error:
"The instruction at "Ox745f2783" referenced memory at "0x00000000".
The memory could not be "read".

Everytime I run a search and click on search links, it jumps and redirects me to an advertisement. I also have some sort of weird Windows98/XP hybrid OS, screencap here:

http://img210.imageshack.us/my.php?image=printscreen.png

I cannot watch any video on websites, since the volume will not work. I get this error message when I click on my volume:
"There are no active mixer devices available. To install mixer devices, go to control panel, click printers and other hardware, (http://www.computerhilfen.com/explanation-h-Hardware.html) then click add hardware. (http://www.computerhilfen.com/explanation-h-Hardware.html)
This program will now close."

I can also *only* start up my PC in Safe Mode with networking.


I ran an Avira (unpaid edition) scan, and an Avast (unpaid edition) scan. Both of these were thorough. Didn't really helped.

I also ran Ad-aware, but nothing. I downloaded Spybot, but it is not letting me run the program.

I tried this procedure, but it did nothing:
http://www.pchell.com/support/svchosterror.shtml

I turned off Windows (http://www.computerhilfen.com/explanation-w-Windows.html) Automatic Updates, which has stopped the error from coming up right now, and the svchost.exe is no longer taking up almost 100% of my CPU.

I ran Hijack this, and used the auto analyze to detect, but it found nothing negative.

Can anyone help me out? It would be greatly appreciated.

please run hijackthis post (http://www.computerhilfen.com/explanation-p-POST.html) the log.
please run malwareBytes and post (http://www.computerhilfen.com/explanation-p-POST.html) the log:
www.malwarebytes.org/ - 7k -
restart your pc please.
then run Combofix post (http://www.computerhilfen.com/explanation-p-POST.html) the log.

www.bleepingcomputer.com/combofix/how-to-use-combofix - 47k -

I somehow feel your windows (http://www.computerhilfen.com/explanation-w-Windows.html) is not working properly, and that you might miss some drivers. At least looking at your sound not working properly and your computer (http://www.computerhilfen.com/explanation-c-Computer.html) not starting up properly, I think it is.

The instructions not being found on referenced memory could be a hardware (http://www.computerhilfen.com/explanation-h-Hardware.html) problem. Could run a memcheck.

The advertisement stuff is weird. Also that you're OS is a hybrid 98/xp sounds weird to me.

Anyways, if I were you I would make a fresh install since it sounds too much hassle to solve all problems seperately.