Contact a computer technician for additional cleaning advice. Inspect memory sockets and the memory modules carefully, checking for any broken or burnt parts. If something is broken, it may be able to be glued back together instead of being replaced with expensive new parts. Contact a computer technician for assistance. Go and plug your PC into a surge protector.
Power surges are lethal to computer memory.
It is easy to prevent a power surge from damaging your computer, but it is not so easy to fix a problem caused by a power surge. If none of the above works to improve your computer's memory performance, take your computer to a computer repair centre or consult your dealer or computer brand website for suggestions. Memory is the backbone of your computer. When you optimise your memory's performance, you'll optimise the performance of your entire machine.