Not sure what you mean by using my memory sticks.
When you look inside your computer, you'll see 1, or more RAM modules ("sticks").
If you have more, then 1...
Let's say, you have two of them.
Remove one of them, and start your computer.
Won't start?
Remove existing one, and put another one in.
Will it start?
If no difference, put both of them back, remove your video card. start your computer.