Do your computer have virus before ?

I think there might be some cookies problem in your pc. You can try it by clearing browser history, all temporary files and Cookies. Even I have faced same thing. Always clear browsing history and all other temporary files so that it can work efficiently. There has been virus in my system too and my task manager is disabled because of it. Just realized it. I will solve it tomorrow.

Maybe you should download antivirus software though it not guaranteed to 100% clean your computer. Another thing is try to reinstall your yahoo. It might work coz it worked for me. If it still doesn't work try to have your computer checked by a technician. Happy my lotting!!!

Nomrmally the login prblems to the website are not linked to viruses you cna have on your computer..but surely many viruses will make computer slow or have difficulties to start up and boot correctly the system!!Porbably you should scan your computer with a good ani-virus and if there are not viruses you should also scan for some spyware or malaware cna be installed on your pc!!Normally if recently you download something attached in mails or you dowload something from the net or peer to peer network you can have a virus or some threats on your system..so you must scan carefully in this way the infection won't duplicate and so have not the opportunity to damages sensible part of the system!!

hii dear friend..nice to meet you here..Yeah my computer has viruses before..For some days i had removed the antivirus software..Why because on that time i was frustrated from the antivirus..If i install the antivus also my computer will be effected by the viruses..So i removed the antivirus..Now my computer is free from the virus..No virus is there..Why because now i have the excellent antivirus..Mine is CA ANTIVIRUS..This is good antivirus i had ever seen before..This will clean any kind of virus..So that no virus is effected to my computer..I had been using the CA ANTIVIRUS for 8 months..So from 8 months my computer is safe...Thank god i have an good antivirus..happy mylotting dear friend..have a nice day..keep smiling..

You need to do housekeeping for your computer once in a while to let it continue to function properly, like scanning for virus, cleaning or detecting spyware, clearing temporary files & cookies, deflamentation to move files & save space... If all these still doesn't work, then probably it is the parts which causes the problem. In this case, a technician may be needed.

i found lot of new virus from my Pen drive