The choice of the place of purchase.

Computers are trading now in all major supermarkets household appliances, small and large computer stores. They are made to order, sometimes made of designer samples. Variants of purchase of the computer a great many, but by far the most proven shopping destination PC is a specialized computer store. It should be chosen based on the following principle: the older the market the store, the better. If the shop is on the market for a few years, it means that he is firmly occupied its niche, and consumers trust it.
The choice of an appropriate configuration of the computer.

If you came for a home computer with a desire to spend less money then You already lost. Modern home computer must be purchased with extra capacity on such key parameters as: the processor, video card, RAM. This is due to the fact that currently, the market many software products requiring more and more resources of the computer, which is much more economical to buy a powerful computer system than complain every time the "brake" and "glitches" within six months after its acquisition.
Starting price from 18-20 thousand rubles You can afford to buy a good on the parameters computer that will be enough for 2-3 years use.

Also don't forget about the companies-manufacturers of components.

Motherboard: Asus, Intel, MSI.

Video Card: XfX, Palit.

Hard drive: Seagate Barracuda, Samsung.

Drive: Sony, Toshiba, Samsung.

These brands have long been time-tested and users around the world, and therefore Your chance to stumble on a poor quality product is much lower.
Selection of peripherals.

Acquiring computer, do not forget that You may need except for him and the other connected to the computer device. This printer, scanner, copy machine, external storage devices (flash drives, portable hard disks) and many more. Therefore, to objectively evaluate all the amount of features that will be on Your future computer.