MSI PM8PM-V motherboard not working after upgrading RAM

[connoisseur]

I want to use some high end software which requires more than 1GB RAM to run those software smoothly but my computer has 512 MB of RAM with 400MHz DDRII. So, I brought a one new Transcend 1GB RAM DDRII 400MHz. I tried to upgrade RAM but didn’t get the success. System is does not start after upgrading a new RAM. I don’t understand what problem is occurred. Any one please help me what was I did wrong.

[Terrextre]

Your board has 2GB Maximum RAM support with DDRII slot of 400-533 MHz FSB. So, Your RAM section as per motherboard specification is correct. So, it is not compatibility issue. I think your ram is not inserted RAM properly. Or your DIMM slot might have any problem. Ensure that the stick you purchased is fine. Remove the old one and fix the new check if your system boots or not.