You've added your question to the Anti-Virus section. but this probably isn't a virus problem.
Try to start your laptop is Safe Mode. If it starts try to use an maintenance utility like AdvancedSystemCare or similar to give your laptop's config a check.
Bruce B
June 2010
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix anti-virus.