New CPU trouble

[nlowrider]

I have a Dell Dimension 2400 and I recently bought a Intel Pentium 4 3.0GHz Socket 478 CPU to replace the original Intel Pentium 4 2.66GHz Socket 478.

I installed everything correctly but when I boot up the computer nothing comes up on my monitor but the computer turns on.

Anyone know what I can do to fix it?

[jerryheavyarms]

Try to reseat everything there. Any error beeps?

[Aegis]

Does the Dell support the upgrade?

[senthilvalli]

first of all you check RAM..

[patio]

Heatsink mounted properly ? ?
Did you apply Thermal Compound ? ?
Was this machine working prior to this ? ?

[xavier]

The cpu you installed might have a larger front side bus rating, meaning your board wont take it.Read you MB manuel to see. this is only a guess

[brad2020live]

update motherboard firmware first (bios) update

[patio]

update motherboard firmware first (bios) update

Please ignore this...

[nlowrider]

Try to reseat everything there. Any error beeps?

There were no error beeps when the computer booted up and everything sounded normal.

Does the Dell support the upgrade?

I had installed an Intel Celeron 3.0Ghz before on it and it had worked fine.

first of all you check RAM..

The RAM is installed correctly, I have in two 1GB sticks of RAM right now.

Heatsink mounted properly ? ?
Did you apply Thermal Compound ? ?
Was this machine working prior to this ? ?

Yes I mounted the heatsink properly but I didn't have any thermal compound left over to put on the new chip.

I have in my old processor right now and the computer is working fine.

The cpu you installed might have a larger front side bus rating, meaning your board wont take it.Read you MB manuel to see. this is only a guess

The motherboard supports up to 800 MHz FSB and the processor I bought is 800MHz.

[xavier]

Try an out of case test, Use 1 stick of ram, cpu, heatsink,video connected to your monitor,keyboard & mouse, only these items.When you turn on pc you should get a display on monitor.If you dont you have a hardware PBLM.

[Aegis]

Xavier:

What is a hardware PBLM?


Nlowrider:

Not impossible that the new chip is faulty.  Not very likely, but not impossible -- especially since you have the old chip in and the system is fine.

I have, once or twice, bought processors which the mother board manufacturers claim their boards will support, and they didn't work.  Nothing wrong with the new chip -- the board, despite what the specifications claimed, wouldn't run a different chip.

[xavier]

Does the DELL support the upgrade [Aegis quote]

[drmsucks]

Yes I mounted the heatsink properly but I didn't have any thermal compound left over to put on the new chip.

This may not be your problem...but it will be your problem.

EDIT: Unless I misunderstood - Did you put thermal paste on the bottom of the heatsink?

[nlowrider]

Try an out of case test, Use 1 stick of ram, cpu, heatsink,video connected to your monitor,keyboard & mouse, only these items.

I did that and the result was the same, still didn't come on.

EDIT: Unless I misunderstood - Did you put thermal paste on the bottom of the heatsink?

There was still some left over on the bottom of the heatsink from before.

[drmsucks]

EDIT: Unless I misunderstood - Did you put thermal paste on the bottom of the heatsink?

There was still some left over on the bottom of the heatsink from before.

Bad plan! Sooner rather than later, remove the CPU and heatsink. Take the heatsink off the CPU and remove all traces of compound from each surface. A credit card edge is good for the first pass and isopropyl alcohol can be used to remove the residue. Remove all traces and dry thoroughly. Then, apply a small (tiny - approx the size of a grain of rice) amount of good quality thermal compound to each surface; spread thinly with a clean credit card edge.

Be very gentle, don't bend any pins, stay grounded.