Shut down the operating system of the computer. Unplug the power cord from himself and from the monitor. Disconnect the monitor from the video card. Only then remove it.
Check the charge in the presence of swollen electrolytic capacitors. Graphics cards often have fewer layers than the motherboard, besides, they are smaller in size, so to change the capacitors on them easier. But remember that before you - all the same a multilayer printed circuit Board, therefore realize a replacement was needed quickly, preventing overheating of the conductors of the inner layers. When replacing the capacitors polarity of their connection.
Again, install the card in the computer and check its performance. If it is not recovered, see whether the fan rotates. If he stopped, or absent, repeat the procedure disconnecting the monitor and removing the graphics card.
Stopped the fan and try to lubricate. Careful not to bend the charge, remove it from the radiator. Peel off the sticker from the opposite side, pull the cap, and then type in the bearing a drop of machine oil. Used vegetable oil is impossible. Insert the cap into place, wipe it dry, and then instead of the sticker glue a piece of tape.
After lubrication, rotate the fan with your finger for a few minutes until its rotation will not be free. Then set him in his place. If you disconnected it from the connector on the motherboard, plug it back in.
If the fan is not at all, find the suitable dimensions of the heat sink device and secure it with the four screws. In the absence of on-chip heat sink do not try to drill for fan holes in the Board (some novice master thought of this before). Take a glue mark Alsil-5, firmly stick to the chip card suitable heat sink (make sure it is not shorted out the conclusions of the chip, and then have it install the fan. Give him power (5 or 12 volts, depending on type) with correct polarity.
Install a graphics card in the computer and check it. If the problem was cooling, now it will work stable.