I've run into a problem and have no idea where to even start.

Just worked on getting rid of malware on my computer(thanks guys), and was working on INSTALLING Avast antivirus free home edition after deleting Norton.  My computer froze up and upon restart, Windows XP was loading, got to the part where it says welcome on the screen, then the whole thing turns blank with a blue background and I can't do anything.  Tried cntrl+alt+del a bunch of time but got nothing, can't right or left mouse click, and if I shut completely down, it just does the same thing. 

Any ideas?Try booting into safe mode.I'm not sure how to do that, can you tell me how?  And after I do, then what do I do?Tap F8 repeatedly after powering up and before you see the XP splash screen...
Re-install Avast.I have exactly the same problem, after doing the scan with avast, I have read so many different sites' blogs about this same problem and tried many different things, but nothing seems to work.  Somebody mentioned spending hours on this PROBLEMS, well if I don't get something fixed tonight it will be days.

To be honest I can only sometimes get the task bar up after re-boot...  1 out of 5-8 tries, so I really don't want to re-boot again, unless someone can a definate idea about how to fix this prob.  I am worried that my computer will crash for good.

Reading the Avast site something like 2500 views on this issue of blank blue screen.  I'm sure it has something to do with an internal bug in their program.

Can someone who has successfully overcome this problem, explain how to fix it?

Please.

JakeHi
I would just like to give you a big thank you mate along with evilfantasy.
I had a similar problem to you and evil helped me remove all the malware and crap
on my PC but I was STILL getting the blue screen.
When I read your POST I decided to UNINSTALL Avast in safe mode.
Restarted the computer hey presto I cons back and functioning laptop.
Thank you very much
I hope you solve your problem also.