Totally Bizarre Freezing Issue

Hey well.... Today i just got on my lappy, and its all normal, then im watching some vid. online, and my computer freezes... Its not like a scree nfreeze, but i cant minimize the window, but i can make those blue-boxes (on the main screen) cuz the window wasnt maximized, and i hit ctrl+alt+delete, to open up Task Manager, and then i wait a few seconds, and then its a black scree, and then my mouse is on it, i then wait a few moments, and i had to hit the power button to turn off my lappy... I restart- it restarted normally, with normal speed and all, then it freezes a little bit later againt, and atm, this is the only moment where my laptop hasnt frozen !

And im hoping it wonr freeze again... but im just wondering, could it be a registery problem? I mean, i dont really let anything at start-up get too-out of-control, i go into msconfig and manage all that i want to start etc. etc... But, when i scanned my lappy with Windows Defender (Full scan) it came up with like 4 different things, the certain files were having unwanted things(according to Defender...) And so, is it because of those files, all of those files are identical, and they are also from Safari... they have something to do with Safari,(im on Vista x64, but i like safari 4, think its the fastest )

Any help?
Any Reg-Cleaners? (THat work with x64 Bit) ?
Thanks

Hello DarkDavil,
You could try to clean out your registry and also scan for malware. Follow the links, they are both free but be sure to backup your registry when promted. Good luck and post your results.

Malwarebytes.org

CCleaner - Download

Thanks! !!! Worked great, i only used the CCleaner though, much faster + i defragemented my entire computer(Via Command prompt) and now its nice and speedy! Thats some rep for you :D

Glad you got fixed, good work.