The computer appears on the black screen does not display the situation, is generally the problem of loose memory, you can reinstall the memory bar to solve the problem.
Tools/raw Materials
Hand, screwdriver
Steps/Methods
First use a hand or a screwdriver to take apart the chassis;
Then on the motherboard to find a flat long shape of the memory, the fixed memory of the card buckle break apart;
Carefully unplug the memory and use a clean cloth or paper towel to wipe the memory of the gold fingers;
The dust in the memory slot can be blown;
Finally put the memory reinstall to the motherboard, the installation process must be careful, to align the interface, and a little bit force down, until the buckle automatically buckle memory (such as the feeling has been pressed in the end, and the card buckle does not automatically buckle, you can try to use your hand to buckle the card.) )
Use a hand or a screwdriver to install the chassis and fix it.
Attention matters
Memory gold fingers can not be wiped with chemical agents.
Avoid using brute force when installing memory