FREE Microsoft Security Essentials

Basic anti-virus, spyware, malware, free download here from Microsoft.

New cheapest Quad Core Processor: AMD Athlon II X4 620

its review here.

Unclock your AMD Sempron 140 from single to dual cores

AMD Sempron 140 Sargas 2.7GHz 1MB L2 Cache Socket AM3 45W Single-Core Processor
Pros: Cheap, quiet, and dual core capable! Unlocked to Regor Athlon II X2 440 with a GIGABYTE GA-MA785GM-US2H board in a minute!

New AMD Althon II X2 replaced Althon

AMD Athlon™ II X2(240, 245, 250 etc.) are total in market and the Athlon X2 (5200+, 5400+, 6000+ etc.) are quit the market.

BTW, sometimes the information are confused, for example,
the 240 (ADX240OCGQBOX) has 1MB L2 cache or 2MB L2 cache?
AMD official site said only 1MB
http://products.amd.com/en-us/DesktopCPUDetail.aspx?id=587
but cpu-world and many retail stores said it is 2MB
http://www.cpu-world.com/CPUs/K10/AMD-Athlon%20II%20X2%20240%20-%20ADX240OCK23GQ%20(ADX240OCGQBOX).html

Troubleshooting

Hard Drive Troubleshooting

How to Troubleshoot a Wireless Internet Connection

Troubleshooting RAM & Computer Memory

Troubleshooting External Hard Drives

How to build desktop computer?

Basic Components Needed to Build a PC Computer

Preparing the Case for a Custom PC Computer

Installing the Motherboard

Identifying CPU, RAM, Graphic Card, and PCI Locations

How to Match RAM & Video Cards to a Motherboard

How to Install a CPU or Installing the CPU and How to Remove a CPU and Motherboard

How to Attach RAM & Hard Drives to a Motherboard

Types Of Video Cards

PCI Express Video Cards

Sound Card Install

How to Check a Computer System Before Powering Up

How to Install Power Supply to a Motherboard

How to Disconnect Motherboard Power Supply

Virus and Protection?

People always need my help when their computers got the VIRUS, usually I try to arrange time to have look at these computer, however, if you know something about basic Anti-Virus, may be much helpful for everyday computer operation, please read it:
Anti-Virus 101