Acer 6920G slowed to a crawl

This happened just yesterday. It's become nearly impossible to use. It freezes up consatntly even when I try to do simple things like call up the task manager. It's like something is taking up 100% of CPU even though no such thing showed up in the Task Manager. The thing about this is in specific, not only do things freeze, but I can't move the mouse either. The entire system freezes for a few seconds. Trying to launch anything takes an age.

I did a Roll back to a couple of days before this Happened(I'm using Windows 7). It didn't solve anything.

In RM Clock, CPU/OS usage shows up as "100%". Is this normal?

 

If task manager doesn`t show cpu usage 100% and that is happening you should check RAM memory and HDD...It may be up to it not up to the CPU...

 

Also; I can't run Scandisk. At all. It says the disk is currently in use and it'll schedule it for the next time I restart. Which it doesn't. At all.

 

Probably fault hdd then...
If you can get a spear one and install windows on it a check if same things happen on new disk...
But I think it is probably up to hdd so you will have to buy a new one anyway...

 

I'm unsure it's a HDD thing as it slows down even with things that should have next to no HDD access. Windows itself is no slower to load. It's not doing it consistantly now, so I'm not sure what's triggering it.

 

I'd just reformat.

 

Then something IS taking up your CPU's time.
Make sure you click "show processes from all users" in Task Manager; otherwise, you won't see all processes.

 

Thanks; I didn't realise that. I can a VIrus scan and it found some trojans. Hopefully it'll be alright now.

Also; I just remembered that this first happened when it crashed on a Youtube video. It did that again afterwards, too.

 

I'm still getting this weird audio stutter. If I'm watching a video after a minute or too I'll get this garble and stutter. CPU load is no longer at constant 100% so I don't know what's causing it.

 

Did you format hdd and reinstalled windows as someone advised?
Didi you try reinstalling audio driver?
That might be useful...

 

Formatting seems a bit extreme :/

 

It's usually the easiest and quickest way to fix these stubborn bugs/glitches .

 

It'd take me ages to set up everything a gain. I know since I've been through hard-drive erases before and I don't want to have to set up everything all over again.

The audio bug is STILL here. I don't think it's the soundcard causing it, but windows.

 

I know I had some audio issues at one point, but I solved them by changing my Nvidia graphics driver from 197.16 to 257.21.
No more pops & crackles here.

 

A reformat would probably be your best bet. Before I reformatted, I just saved my pictures and files (music too) on my flash drive. If you can, try maybe a restore to a point before you noticed these issues. If the problem clears up, the chances are it was a virus or bad program, or maybe even a registry issue?