In the last week I have had two computers, one XP and one Windows 7, exhibiting the “White Screen” symptoms, namely a White Screen immediately after log on, which does not allow Task Manager to run, and which shuts the computer down in Safe Mode. Surprisingly there is little out there on thev web which is much use about this, just one small comment on one forum gave me the clue about how to fix it.
Most sites suggest using a Kaspersky Rescue disc which I duly did in both cases, and while many viruses were found and removed in each case, the real symptoms remained. One site, Bleeping Computer, recommended running their own utility “RKILL.COM”. This is put in a Start Up directory for “All Users” so that it is run at start up, killing the malware and making a few registry changes. When the computer is restarted, nothing appears to happen for a while, but after a few mintes, if Task Manager is started, you can now see the Task Manager screen, and from there get into windows correctly.
RKILL in this case found and killed an occurrence of ZeroAccess Rootkit virus, but of course, getting rid of a root kit is never that easy. Normally I would suggest, or even insist on blowing away the hard drive and re-installing everything, but in both cases this was not on. So there followed lots of fixing up, including re-installiung service packs, re-installing browsers and may other things. Definitely not for the faint hearted! Especially as you know the computer may still have problems when you have finished.