Well I will try and answer this the best that I can. Basically a computer can consist of two broad categories, hardware and software and the way a computer works is between these two working together. I will oultine them both briefly below.

If you shop around, make a note of the features of the laptops and Netbooks, including; price, CPU speed, Ram memory installed, version of Windows, screen size, keyboard size, and typical battery run time. If you can try a demo laptop and a demo Netbook, it will give you a better feel for the overall differences.

A faster, larger hard drive. Keep your old hard drive and all the information on it. You can purchase a brand new hard drive that is faster and can hold more information. That way your same computer would have 2 hard drives. You’ll want to reinstall your operating system on the new hard drive, that way you can utilize its fast searching capabilities with your operating system.

How can you protect the hardware? The first thing you can do is to purchase or download the reputable anti virus. It will be better for your computer. In fact, some companies provide/run the online virus scans for free. Some of the examples are such as Kaspersky and also Trend-Micro Housecalls. The important thing is about updating the anti virus. It is true that anti virus is created in such a way to guard your computers from the virus invasion. The anti virus companies update their software in a regular way. Please remember that the threats on the internet are really awful. You should never let your computer at home or everywhere are driven by Trojans, worms and even hacks. To get the maximum protection and benefits, updating the software every two days is highly recommended.

Operating system is possibly an 8th point to consider for reducing cost. Don’t pay extra for Windows Vista Ultimate if you aren’t going to need the features, and don’t skimp down to Vista Basic and then wonder why you don’t have the cool Aero interface. Again, compare before you buy.

Secondly, game freezing can also happen if your computer hardware does not meet the requirements of the game such as video and sound cards. Always install the required sound and video cards that meets the requirements.

Then there’s the really baffling issues, like your computer refusing to turn on or simply overheating and shutting down without even giving you a chance to log on.