Have you installed a new Anti-virus program?
The longer without one – you will become infected.

Have you updated your Malwarebytes program and scanned your pc with it?

Download - http://www.superantispyware.com/
D/load - update – scan you pc.

Also run an online scan – just as another virus check.
http://housecall.trendmicro.com/uk/

D/load Ccleaner – to clean out all temp files etc
Best not to use the Registry cleaner.
http://www.piriform.com/

Lets us have some pc specs.
Hard drive size – free space?
Installed Ram. etc