If laptop was bought a month ago, it may still be covered by store exchange policy. If so, just take it back to store for exchange. If you bought it with a credit card, it may also be covered by the credit card company for its exchange or repair. Also, if you bought an extended warranty when you did the purchase, it will cover not only repair but also replacement should repair not be possible. Finally, there is the manufacturer's warranty which typically is for one year from the date of purchase but you likely will have to ship at your expense to manufacturer's designated repair site.
If you choose to continue troubleshooting yourself, here are possible freezing causes...
1. hard disk drive has defective sectors (not likely but possible which is why there is exchange)
2. virus infection (pc usually come with a firewall and antivirus which you must activate)
3. conflict between two firewalls, two antivirus or two spyware/malware programs (suppose to only run one of each but often an antivirus program includes features like an internet security suite.)
On the 2nd Tuesday of every month, Microsoft releases a free tool to address virus infections. The tool is called Microsoft Windows Malicious Software Removal Tool. It is usually downloaded in an infected computer's hard drive but if this cannot be done, the tool can be loaded into a USB stick or thumbdrive on another computer then inserted into the infected computer's USB port to be run. Microsoft also has online tools to scan and remove malware. For more information and download go to .... http://www.microsoft.com/security/pc-security/malware-removal.aspx