Help, my system hardly works!!

Hi major geeks!
I need big help with my system (vista) which seems to be quite injured. Don't know what's happening, seems to begin with the impossibiity of windows update to download actualization (pack 2) even if rebooting twince and then giving up automatically, each time I close or open the computer (and during 20 minutes !!). Now, if I open windows update, it just keep searching for actualizations endlessly..
The computer gets very, very slow, doesn't respond for few minutes in every page I open..
I have checked my events journal, it gets full over 1 thousand error and avertisment messages!!!. Don't know what's happening, pleaaaaaaase help, I'm desesperate as I have to give my tesis in 3 week, at least, the perfect time for my computer to be like crashing!!!
What can I do ???

 

Hi...:cool
I don't know but... Did u try to hide da presente update for SP2, or HIDE all and reboot, next search manualy. reboot and whait!?
I just ask because i has done it this way and worked, so...

 

Hi plodr
Thanks so much for your answer... I'm doing all the step you suggested me. I didn't have problem so far (even if it takes ages..), till I try to run RootRepeal.. does't want 'cause coudn't find the adress ......., and I received some crash reports.. Well...
I write to the forum you tell me in case of this kind of problem, coudn't get any answer so far.. But I was wondering if I can skip this step and run MGtools? What do you think?
Have a nice day,
Muriel

 

Yehh, I've aready done it (I mean Malewarebytes)

 

Skip it and go to the next step.

Also, it's not a good idea to be asking for help here. They have a special malware forum because of too many well-meaning but ignorant people trying to help but making things worse. Just be patient and someone knowledgeable will get to you.