My computer had been sending up various ads whenever i went online so i went to PC world and downloaded a adware and registry cleaner. Indeed they helped and my system ran a lot faster but one every now and then the registry cleaner would keep track of any unknow entries. I just deleated them and now i cannot login to windows anymore. Evertime i type my password and press enter it starts loading but then immediately logs off. I remember being unable to open any applications or programs that day that it first did that and when i restarted my laptop it just wouldn’t load. Does anyone have any suggestions on how i can repair this or do i need to reboot?

About:blank?

have see this in my browser all night but because my computer has been so slow and shutting down tonight I never checked it until now and it’s saying that it’s spyware or adware and that I need to install a program to remove it. I really don’t know what I;m doing, i bought the computer, brought it home hooked it up and now i know some but not a lot. do i need to install something to have it removed and if i do can i do it safely and free? thank you so much.

Anti Virus Software?

Ok i have asked like a million questions in the last few days and i havent been given clear answers and i just want my computer fixed.
So if i wanted my computer completly free of spyware, adware, viruses, malware, registry cleaned and so on….what FREE software can i download. I do not mind downloading more than 1 piece of software. I do not want a free scan if it will not fix my problems for free.

Please help it is much appreciated

Have used: AVG, AVIRA, ADWARE, CCLEANER, CYBERDEFENDER, EUSING and others. But my comp is still slow. I think I might have downloaded something infected or downloaded some malware and I don't know how to get rid of it.

what is the most efficient way to clean up computer systems from viruses, spyWare, malware,root-kits ,trojan horses, and any adware ?
in a free or cheap way?
plus I might be doing this for other people so if there is any suggestions on how to do that on multiple pcs.
I would appreciate it if you explain in step by step process?
Please provide details as much as possible.
Thank You In Advance.