Why does my comp not boot when I install my 4th gig of ram.?

Question

I have duel channel suppor on my board, my first two slots have the same type of ram and my second slot also has matching pairs. For some odd reason when I attemp to install my 4th gig of ram my comp wont' start up. It's fine with 3, I even swithced out the two ram sticks and it works with 3 just not with 4.

Answer 1

4th gig ram may be problem or Mhz may vary. login the system using only by the 4th gig you can easily find the solution

Maiba_abu

Answer 2

If it's Windows XP then theres your problem.

If it's Vista 32 then you should be able to have 4.

Answer 3

If it is not compatibility issue. its either your mother board cant support 4gig of ram or u have a damaged slot/module

Answer 4

Have you checked to see the maximum amount of ram each slot can hold