Blank screen when I upgrade to a P4 cpu?

[ukjim]

Hi all
My m/board is an Intel D845GRG and I currently have a Intel Celeron 1.7 GHZ 400MHZ FSB based on the .18 micron process with a 128KB cache socket 478 and the chipset is 845G. The present bios Ver is RG84510A.86A.0031.P16.0304111002

According to the Intel site the largest cpu this board will support is a P4 2.8Ghz 533Mgz 512kb cache. When I tried above P4 cpu (step code sl6hl) on my m/board all I got was a power on light, the fans worked but the screen stayed blank. Do I need to clear the bios for it to be seen? Is there something else I need to do before it will work?
When it did not work I but my Celeron 1.7 back in and all works fine, so I a least know the P4 didn’t harm my m/board. Can anyone suggest what my problem might be?

Btw is there a difference between a Pentium 4 and a Pentium® 4?

 

[Grimmy]

What speed RAM are you using? DDR-???

I'm guessing it the P4 2.8/533 may not like the ram speed.

I think you need at least DDR333 or PC2700 to run that P4, but I'm also thinking I'm having brain farts atm.. 😳

 

[chrone]

try to update the motherboard BIOS downloaded from intel website and make sure the BIOS update is correct with motherboard you have.

i have similar experience when upgrading from p4 1.8ghz fsb 400mhz (northwood) to p4 2.4ghz 533mhz (prescott) with intel d865perl desktop board. after i updated the BIOS from intel, it run fine until the very moment.

the 533mhz fsb you have is not a limit for your ram because 533mhz fsb can take both ddr 266 & 333, but not ddr 400. i assume your ram frequency is running ddr 266 since intel desktopboard does not allow you to run any faster memory with the old celeron 400mhz fsb.

but just to make sure, try with the above posted solutions by logainofhades and Grimmy, before trying to update the BIOS, and before you try to update your BIOS be sure to read the readme file or manual instruction from intel website.

good luck!

 

[ukjim]

Hi all, thanks for the imput.
Never gave a thought to the memory angle.
I am running with
Kvr266x64c25/256 ddr 256mb pc2700 2.5v cl 2.5 and
M2y25664ds88c3g-5t 256ddr pc3200 400mhz 2.6v cl 3

I know they both will only clock at 266, but my idea was to match the 400mhz at some point. Not so sure now though if the P4 533mhz fsb won’t run with ddr 400.

Could the fact that my memory is not matched be causing my problem?

I’ll try clearing the bios first, see how that goes.

 

[chrone]

Could the fact that my memory is not matched be causing my problem?

yeah perhaps it will be a problem when you run it dual channel mode.

if the rest setting fails, then try to boot only with one slot of memory installed and try it for both ram sticks to configure which one is holding you back.

in my experience, some unmatching memory modules may goes wild with intel desktopboard, even it was running in single mode channel.

let us know what you did after you fixed this problem so that we can learn some more tricks with that kind of troubleshooting

 

[joefriday]

To the best of my knowledge, the i845G does not have a dual channel memory mode.

 

[chrone]

oh yeah you're right, the 865 does.

i was saying that in my case the d865perl desktopboard cannot run with different memory module in dual channel mode, it just would not boot. hehe 😛

 

[1Tanker]

try to update the motherboard BIOS downloaded from intel website and make sure the BIOS update is correct with motherboard you have.

i have similar experience when upgrading from p4 1.8ghz fsb 400mhz (northwood) to p4 2.4ghz 533mhz (prescott) with intel d865perl desktop board. after i updated the BIOS from intel, it run fine until the very moment.

the 533mhz fsb you have is not a limit for your ram because 533mhz fsb can take both ddr 266 & 333, but not ddr 400. i assume your ram frequency is running ddr 266 since intel desktopboard does not allow you to run any faster memory with the old celeron 400mhz fsb.

but just to make sure, try with the above posted solutions by logainofhades and Grimmy, before trying to update the BIOS, and before you try to update your BIOS be sure to read the readme file or manual instruction from intel website.

good luck!

According to the Intel website, you need to be running BIOS v P06 or greater to support the 2.8/533 P4.