I can't get rid of the "CMOS/GPNV Checksum Bad" message. I'll list how it happened and what I've done to try to remove it. System is a friend of mine, Gateway 500s.
-He tried to flash BIOS with new version. Obviously, it didn't work. Here's what I've done to try and remove the message.
I've taken battery out and inserted after 1-2 minutes trying to reset CMOS. I've replaced battery, as well. Mobo has jumper settings to change from "normal" to "config" which is trying to reset everything, but below those jumper settings it says "no jumper recovery." Some boards have a jumper recovery mode from what I've read. Let's see...I've tried to switch to normal & config modes, BIOS maintenace screen shows up and I reset everything, the screen then tells me to put jumper where it was and turn on. Doesn't get rid of message. I've reseated all peripherals (RAM, Video Card) This is where my problem comes in.
I only get the option to go to setup by pressing F1. I can't get past this screen, can't access the floppy to try and reflash the BIOS. I know that's the problem and if I could access the floppy drive and try to re-flash, my problem would be solved, but how do I get rid of this message, in order for me to get access to floppy drive. I've even contacted Gateway Support and they told me to ship the PC in, and they'd fix it. Charge of $169 plus parts and S+H, I can buy a new motherboard myself for half that price. Just want to access the floppy and try to reflash.
Anyone with any ideas, please help, I don't know what else to do! Thanks in advance.
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I've tried loading the default settings from BIOS...Haven't checked to see if floppy drive LED comes on, but what difference does that make? If I'm not even able to make it past this nag screen. If there is a way past this screen, I should have no problem re-flashing to making it work. BIOS may be bad and have to buy a new mobo or new bios chip. Just wondered if someone else could help me think of something that I have not done yet....Keep your suggestions coming please!
Well, that may very well be, but I still can't get access to a floppy or CD-Rom to access anything because of this nag screen (CMOS/GPNV Checksum Bad) My only option is F1, can't get past that screen. Any ideas?
Which screen is F1 taking you to. Try this. Remove all the PCI cards. Disconnect the hard drives, the ROMS, and the floppy. Strip it down to nothing but the mobo, memory, CPU, and graphics card (or onboard graphics). Then reboot and try to get back into the BIOS to set the defaults. Also, in some cases a bad or failing power supply will cause a checksum error. If the Gateway PSU is not proprietary, try a different one. The possibility also exists, that the CMOS chip was damaged by your friend flashing the BIOS incorrectly. The only thing that will fix that is to replace the chip. You did put the little CMOS battery back the correct way, ya?
I fixed this problem.....after about giving up on this....I thought I'd check up on the BIOS chip...American Megatrends (AMI) had a feature when you hold CTRL + HOME during boot, it'd bypass all errors that may occur, kind of like a recovery mode, but you had to have the floppy with bios update in...it'd boot to that and I re-flashed...problem was fixed...thanks for the help though...
I had this problem on a gateway c500 also. After several hours and several google searches I finally got it. I originally put on the express intel bios update and should have used gateways bios. You can try every thing they say and will have no luck. With taking off the recovery jumper the only bios I could get to load was an old d845pt bios. After it would load I get the same error. Thier is no good proceedure for putting in the correct gateway bios after you hosed it. I got to thinking what if I compare the files and see which I should keep and make a hybrid disk. I used Gateways bios files and intels Dos system file, Beep appl and Iflash and it worked. I zipped the file and if anyone needs it I can email it to them. The old bios from intel that would attempt to load was pt-po2 and I mixed it with gateways 7513332. I still got the prompt to push f1 but I could then push f10 and exit with success.
You're very lucky. Flashing an incorrect BIOS can not only ruin the CMOS chip, but in many instances ruin the entire mobo or require a costly repair to change the chip. I wouldn't be offering your "fix" to anybody. Bad fixes tend to irritate people to say the least.
I'm still using Gateways bios , I'm just using intels dos file and loosing the Autoexec and command. I tried just taking those 2 files off of the floppy 1st but it was intels dos file that lets it load in recovery mode. They are Intel mb's made for a Gateway, and the board was about 2hrs away from the trash can anyway. If anyone is desperate and lost all hope, I will still send you a zip file that you can unzip to a floppy and use for a recovery. I'll also send you a word doc comparing the files showing why I came to idea of a fix if you want. And in this case the bios was already hosed so I had nothing to loose.
I have the same problem. Please send the zipped file to firstname.lastname@example.org. Also, do I need to create a bootable disk first...and then unzip the files to it? If so, how can I do that with only Windows XP machines?
You can format the disk with xp first and then unzip the file directly to the floppy, or unzip and paste to the floppy. You will also need to use the bios recovery jumper on the motherboard. If I remember right just pull it off and boot the computer with this disk in your floppy. Remember to put the jumper back on after you try restarting the mb. It will rewrite the bios and will get your 2 sets of beeps and your set to go. When the computer booted the first time I think it had me save my current bios settings and reboot. Then after the reboot you do get the message once windows starts that your bios update failed but keep in mind the one that failed was the one that crashed your computer. Good luck, should be a piece of cake.
Great job and thanks for the help. Everything worked as you said...except I had a small heart-attack when it first got into XP and none of my USB items worked (which included my keyboard and mouse)! I found an old mouse, powered off, went to safe mode...and then into the control panel. The computer installed the USB drivers...then found everything else. Now I'm cooking with gas (ok, with this old machine maybe it's more like cooking with a camp fire).
Again, thank you for sharing your knowledge.
Can you please send the files to kg4vgc (at) gmail (dot) com please?
I have a gateway 500s, with an intel d845pt mobo. The previous owner
tried to use the intel flash files from the intel site, which of course killed it.
I scoured the gateway site, and can't find the files, all they offer for the system
when I enter the serial # is monitor inf files! Grrrrrrrrrr!
To the five people looking for the bios fix that have email addresses ending in @gmail.com. I get the mailer demon everytime from my netzero and my local account. If you still need it sent to you send a email address to email@example.com