What does this beep code?

[GloriousPlague]

Okay, so my friend ask me to try and fix his computer for him. The only problem is that I have never experienced any kind of beep codes before. It starts with a short beep and then the second beep is rather long. After that it pauses for a few seconds and then starts again. It is an older HP Pavilion Slimline. I was wondering if anyone know what this particular beep code meant or if they new where there is some a good website or something because I've been googling for an hour lol.

 

[OhSnapWord]

Check the memory. If it has 2 sticks, test with 1 at a time. If not, test with known good memory.

 

[GloriousPlague]

Lol yea I'm actually trying to find a way to get the stupid DVD drive out... which the memory is right underneath. I swear these slim comps are so annoying.

 

[GloriousPlague]

After looking at it a minute I realized that whom ever worked on it before removed the main fan that sits on top of the disk drive so I'm assuming thats the problem and I don't have a replacement.

 

[strollin]

According to this HP website: Computer Does Not Start and Emits a Beep Code - HP Customer Care (United States - English)
1 short and 1 long beep indicate a memory problem.