Thats where you start...GET a good AV -not Mcafee- Nortons or PC-cillin...till then you can go to...www.antivirus.com and use the free tools...this doesnt replace a AV program on the system but it will help. Also go to www.lavasoft.com and down load adaware....let it delete everything it finds as spyware...
This is just basic computer maintiance...might/might not solve your problem!!
Now is there a time frame that the lock ups started happening?? Did you do any updates, add any software or hardware...Can you reinstall the OS??
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