Pc wont restart

Need more info, like what kind of ram, speed, motherboard, cpu, what was the old ram.

Try reseating the ram and try again.

If that doesn't work, post the exact RAM model.

I really hate Intel mobos...

First, take off the caps and calm down.

Second, does the other ram still work in the system?

If it does, the memory is probably bad. Put one in at a time in the first slot to see which one is bad.

Then yes, it sounds like the mobo is probably no good.

All of your ram is probably good then.

himcan you pls explain what had happen to my system?i just added a memory then suddenly it wont work anymore and now my motherboard is dead?what had transpired?

Well, it happens and I really don't want to be the person to tell you this, but if you didn't change nothing else then it just broke is all.

Are you using the onboard graphics?

Edit: Then your mobo just went bad is all. No beeps because it's probably just totally broken.

Well, if you didn't change nothing then it's obviously broken.

Although, try resetting the bios to make sure that the new ram didn't mess anything up, should be a little lithium battery on the mobo, unplug the power supply then take the battery out for about a min, put it back, plug the comp back in, then put the original ram back in and then try again.

If that doesn't work, you probably need a new mobo replacement. I'm going to assume that your cpu and everything else is fine.

A lot of things could have happened while you changed the memory. Probably need a replacement but the last thing you could do is clear the bios and that's about it.

The fact that there are no beeps means the mobo is unresponsive and probably not working properly. Try boot with no memory, if you get no beeps then it definintely is the mobo.

What do you mean by "it started for a while?"

Did you get anything to post on the screen?

Maybe the RAM is set to AUTO for all the timings, and the sticks have different timings. This can cause boot up hangs. Clear the BIOS, as suggested by others, and manually set the RAM speed and timings to relatively high settings. Please list the actual model of all sticks of RAM, and we can give you some ideas to use for the timings.