Just so that you know for future reference, your system has:
Computer Processing Unit (CPU): Intel Core i5 - 2450
Random Access Memory (RAM): 6Gb of DDR3 memory
Operating System (OS): Windows 7, 64 bit
Hard Drives: 100Gb SSD (probably the C:/ drive)
1Tb USB Portable Western Digital
Hard Drive File System: NTFS
Antivirus (AV or A/V): Kaspersky
Since you've mentioned that you're not too aware of computers, just be careful to never
install and use two antivirus programs at the same time. Doing so can also lead to strangeness with missing files and such as the two antivirus programs tend interfere with each other.
Note that this only affects antivirus programs. Utility programs are not affected by this issue.