Your memory information only gives "system memory 3317 MB (DDR 2-800 DDR 2 SDRAM)", so it only shows the sum of the two memories. Your motherboard is G3 1 board in Gigabyte, and the western data hard disk is 320G, so the information given by the CPU is insufficient. I guess it should be E2200. Pioneer's optical drive and graphics card are integrated.

1, redo the system first, which is probably a system problem. After redoing the system, all the problems are solved;

2. If you can't solve the problem after finishing the system, you should check whether the two memories are of the same brand. If not, check their frequencies, which will waste high-frequency memory (high frequency is used as low frequency).

If you are playing a large 3D game, it is recommended to add a discrete graphics card, but this configuration is hard to say, and the requirements should not be too high. If the CPU is E2200, overclocking is the only option.

I hope it helps you. Give points, hehe