CMOS/GPNV checksum bad

[rockocubs]

Help!!!!
I am getting the following on a new motherboard cmos/cpnv checksum bad. I cannot get to the bios to change anything. Other than being able to turn on the num light key i get no response from keyboard, have used keyboard on other machine and it works fine. i changed the cmos battery, i rubbed an pencil eraser on the contacts, i reseated the memory and cpu.

[rockocubs]

Oh i have also hooked up the keyboard as a usb keyboard so it it not the ps2 conector on the board.

[MRCOMPUTER]

Clear/reset the cmos jumper and try again.
Which mainboard/processor/memory are you using?...;)

[rockocubs]

Sorry forgot to mention i clear the cmos everytime before i reboot. A ECS M925LMR P4 478 PIN i am using a P4 1.7 Gig processor, cip is year an a half old.

[n7vxj]

You're more of an expert on these types of issues than I am, MrC, but I was just wondering if a bios flash would resolve this?

[rockocubs]

How would i flash if i cant get to a boot sequence.

[rockocubs]

I picked up new board same make and model, this one powers up but no video, no beeps or anything.

[MRCOMPUTER]

Believe the 925 board has both sdram and ddr slots.
It has to be jumpered to the correct memory type.
You have the long bank of jumpers and the single jumper between the memory slots-


I would start there...:)

http://www.amptron.com/Images/P4-925LSD.jpg

[rockocubs]

Yes the jp1 between the memory is set 2.5 v ddr ram and the long bank of pins are all open for DDR Memory.

[Lt.Col.Claymore]

well i have this problem with my old pc same **** it will not go off i see only DRIVER_IRQL_NOT_LESS_OR_EQUAL

do you see this also ?

its an

Aopen AX4B-533
Pentium4 FSB 400Mhz 1,80 Ghz
786 Mb DDR @ 134Mhz (MAX 266)
and Windows Xp Home (Sucks)
ASUS v8170 GeForce 4 MX (64MB)

and got R1.11 Bios update

And works Like ****

My alienware AMD 64 FX is 12 times better .take those pc systems

[MRCOMPUTER]

Couple of things about the 925 board-
The jumper between the dimm slots maybe marked wrong.
Reverse it and see if it will post.
Mainboard and heatsink support are not as strong as they should be.
Bet the board looks bent/curved, in the processor socket area. This can cause The memory sticks not to seat correctly. Pull the board and set it up on a phone book or similar. Pull and reseat the memory. Hook up power supply, keyboard, mouse and monitor cable. Touch the power switch pins with a screwdriver tip. See what it does.

LTC - Your problem is different and not related to this one. Most common on that error message is processor overheating.
1. Check processor fan. If it is an oem processor, pull the heatsink and reapply thermal paste. The old stuff has probably dried up.
2. Bad memory will cause this also. Try a different stick.
3. Mainboard processor voltage set too low.
4. Bad processor.

Back to the 925 board. I was never happy with this one. Feel like it was a poor attempt at an All-In-One P4 board. Still have the 2 ,I bought to test. This board has since been dropped from production...:p

[JoshB]

Im having the same problem on my Dell Dem 4100 CMOS/GPNV checksum bad.Whats the deal have you got yours fixed if so let me know how you did it wheres the cmos jumper Thanks

[rockocubs]

Mr Computer,
I tired your ideas they didnt work, but while i had it out of the case, i grab an extra stick of memory i forgot i had, and it took right of with both ddr memory slots filled. So now i am trying to load windows so keep your fingers crossed.

[MRCOMPUTER]

Keep us posted...:)

[rockocubs]

Trying to load windows me, after returning after first boot process it just powers down, when you fire it back up it goes into safe mode, if you do the step by step mode it flashed the safe to shut down computer screen and shuts down right after msmouse.vxd if you load it or not.

[rockocubs]

Hooked up a new mouse, formatted drive and tried loading windows and it worked like a charm.

[evildooinz]

I also get the same error. I just got a new cpu, installed it and reset cmos. Now it wont boot and gives the error “CMOS/GPNV Checksum bad” I have tried installing my old working cpu and it makes no difference. I think something happened when I reset cmos. I want to flash bios but can’t get my comp to boot off anything. Is there anything I can do for this? I don’t want to have to buy a new board. ;~/

Here is a little info on my machine

Mother Board
Bios: AMI A630MS V3.1 100401
Manufacture: Micro Star International (MSI)
Model: K7T266 Pro 2

CPU
CPU: AMD Athlon 1050 MHz

Video card
Video: Nvidia Riva TNT 2 16mb AGP

RAM
Ram: Centon 2700 512mb DDR 333MHz

[reecehockley]

I also get the same error: i got a p3 motherboard and it comes up with
"CMOS/GPNV Checksum bad" and i changed the battery but it still comes up what shall i do ???

[reecehockley]

I also get the same error: i got a p3 motherboard and it comes up with
"CMOS/GPNV Checksum bad" and i changed the battery but it still comes up what shall i do ???

[Daely]

i have a problem with this type of mother board a M925lmr i cant get the video to come up tried 3 different processors and different ram stick and changing the ram slots in use what should i do thanks for the help a browning cap wont do in my motherboard will it its just a little spec in the middle if that help :mecry:

[MRCOMPUTER]

Daely. The 925 board will take a variety of 478 processors and memory. If your version has 4 memory slots, 2 are ddr and 2 are ddr2. Make sure the jumper, next to the memory slots is set for the type of memory you are using. Check your cmos jumper. These boards were shipped with it in the :clear: position. Change it if so. You mentioned a browning cap? If you have bad caps, you need to change them...;)

[MRCOMPUTER]

evildooinz. Pull the board and setit up on a cardboard box as a simple system. Board may have grounded when you changed processors. Check the cmos jumper. Sometimes the brass contact set will come out of the plastic cap...;)

[Daely]

I my extra slots are Dimm ram slots no the cmos jumper is in the correct spot, would they stop it from sending a signal to the moniter? oh and heres a pic of oone of the motherboards i have http://img145.imageshack.us/img145/7290/dscf1149jd0.jpg

[MRCOMPUTER]

That Amptron board is a rebranded PC Chips.
That row of jumpers next to the ide connector, changes voltages for the memory.
That board will never post with all the blown caps. Change them first...;)

[Foggy]

“CMOS/GPNV Checksum bad”

Sometimes it's as simple as going into the BIOS and setting the date and time manually.

[Daely]

Thanks for the help Mr.C but i think id rather just buy a new motherbaord ill post a pic of the other one i use thats just an extra one i have.

[MRCOMPUTER]

Okie Dokie. I'll watch for the pic of the other board...:)

[Daely]

here ya go looks the same though http://img210.imageshack.us/img210/5350/dscf1152ws6.jpg

[MRCOMPUTER]

Yup Same board. This one nonfunctional also?

[Daely]

yes same problem i dont understand it

[MRCOMPUTER]

Ygpm...:)