WinXP Issue: 100%CPULoad after Logon

[Grommo]

Dear The Helper forums,

So, I'm back with another annoying issue that came on me out of nowhere.
I have a serious issue with my stationary computer (which im not using to write this btw) and it just started unprovokedly when i was browsing the internet (NO not porn/virus sites ;P).

All of the sudden the computer all but froze. I'm able to move the cursor around, but it takes around 1-2 minute to for example get up the "windows home" menu. I restarted the computer, and the problem was/is still there.

Here are some details of my setup before i continue:
Windows XP Professional SP3
Asus p5q pro mobo,
Corsair Powersupply,
ATI 4850hd graphics,
Intel core2duo e8400 (3ghz),
2gb RAM
----

MAJOR ADD: EVERYTHING WORKS PERFECTLY NORMAL IN SAFE MODE

So, continuing on the issue, when i start my computer all seems fine and dandy. But when after I logon trouble shows it ugly face. It approximately 5minutes for EACH process i have on startup to start. I click ctrl+alt+delete and after around 1minute i get up the menu, then it takes another minute for the actual taskmanager to pop up.

The taskmanager tells me that the CPU is running at 100% load. I check the process tree (which takes like a minute to get to) and NO process in the list is even gulping a SINGLE percent!

Navigating around takes forever. The only thing that is as fast as usual is the taskbar pop up (I set the taskbar to auto-hide(Oh but sometimes even the taskbar takes forever to show, like its glued to the side or something)). The "load LED" on the chassi hardly blinks and I rarely hear the processor/HD work.

What the H3LL is wrong with my computer? :banghead:
I think i can repeat that this occured without ANY changes in software or hardware whatsoever! Mr. "Unexplainable Computer Problem" seems to like me a lot, because he KEEPS SHOWING UP!

Please help me, helpers!!

Yours faithfully
Grommo

UPDATE ADD: Now, after waiting about 40 minutes since logging on, the cpu usage has dropped to 50-60%. Navigation is slightly faster, but the process tree still doesnt show any gulping processes. And when i try to start an application (CCleaner for instance) it still takes lightyears (it hasn't popped up yet...).

 

[UndeadDragon]

I know that you say that you weren't browsing any websites with viruses at the time, but it would still be worth doing a virus scan anyway. See if that can help the problem.

Else, try starting in Safe Mode and see if that is any faster.

 

[Grommo]

I know that you say that you weren't browsing any websites with viruses at the time, but it would still be worth doing a virus scan anyway. See if that can help the problem.

Else, try starting in Safe Mode and see if that is any faster.

Hey, thanks for helping out!

Safe mode works AWESOMELY well. Just as normal windows would do well.. uh normally. I did registry scans with WinAso, CCleaner, Comodo system cleaner and Spybot S&D and found some registry errors i deleted. I also removed several unnecessary processes from the startuplist. After that I chose to try normal mode again, but it was just as crappy as before.

ADD: Oh I'll try a virus scan with my Comodo AV suite just because you said so... I'm not having high hopes for it though!
ADD2: Comodo is giving me a crappy error when i try to start a scan. Probably some conflict in safe mode or something. I'm running a spybot scan right now, and i'll download a portable virus scanner on this computer and transfer with an USB memory.

ADD3(getting tired here...): As it works flawlessly i Safe Mode, it has to be something that starts in normal mode, but not safe mode. (Safe mode with networking works as well btw). So I'm gonna try and reinstall my ATi video drivers and see if that helps.
Otherwise, could it perhaps be a startup service thats causing the problem?

 

[UndeadDragon]

Check msconfig and see what starts on startup. Try disabling everything that is non-essential.