I have an Asrock P4VM800 m'b, 800mhz fsb, HT technology) tonight i tried to instal a northwood 3 ghz processor into my mainboard. at first i didnt realize that there was no thermal foam or nothing on the heatsink, i installed the chip and put everytthing back together and then turned on the computer. it read on start up 3 ghz found but when it got the the windows loading page the computer just shut off. after that i tried restarting the computer now the computer turns on but just the power light is on nothing happens just a black screen. so i went out and bought some thermal grease and slapped it on and still same thing and for some reason the chip gets so hot u cant even barley touch it. previously i had a intel 1.6 ghz cpu now that wont even work. i did all my reaserch and this mother board is capable of this chip can anyone help me out thanks phil

Either you didn't apply the paste properly, didn't reinstall the heatsink/fan properly, or both. When applying paste, you only need a small dab about the size of a BB or grain of rice placed in the center of the chip: http://www.arcticsilver.com/pdf/app...

if i put to much grease can it damage the computer in any way

Tear apart the machine & benchtest the components .... but do ensure that the thermal material is appropriately applied as hinted by jam. If you can get the components to POST (outside of the case) -- you should have nothing to worry about.

If you are getting a no post issue, than Sabertooth is right. It's time to tear it all apart and test every single component. It is always good to have multiple systems for this purpose. You may find that the issue is not what you expected it to be.