I have cleaned my RAM from black dust and earlier it was not booting up. But now it is booting with two beeps. How to fix this problem? Please suggest solutions to me.

I’m using an Intel Pentium D dual core 2.8 GHz, 250 GB HDD, 1 GB RAM, 96 MB Intel graphics memory, ASrock motherboard, American Megatrends Inc. BIOS, Samsung DVD writer.