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Thread ID: 35948 2003-07-26 08:07:00 BIOS ROM Checksum error Stumped Badly (348) Press F1
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163030 2008-04-09 20:09:00 I have to hit this up again. Don't complain about the bump, this thread is the first result in google for "BIOS ROM Checksum Error" and it's not even solved.

Two different rigs I own, both with an ASUS A7N8X-Deluxe mobo, have this problem currently. The same exact error from the first post here. I have tried everything (that's every single one of the comments posted in here) and no dice. The computer I'm using now seems be the one of the two that is suffering less from this error (the other computer is totally unusable, this one boots 1/10 times).

Here are the specs:
PC 1: A7N8X-DLX, Athlon XP 1800+, 1536MB PC2700, 430W PSU, Enough cooling for 5 OC'd rigs.
PC 2: A7N8X-DLX, Athlon XP 2600+, 512MB PC3200, 500W PSU, Great cooling.

PLEASE HELP!
I think one error showed up after a RAM change, one after a slight overclock (50MHz over factory clock, but a high-end heatsink and fan were attached). And I have tried reversing the changes that MAY have caused it, but no luck still. 		twinkleh (4309)
163031 2008-04-09 23:15:00 See if there's a similar prob / fix in the ASUS forum (vip.asus.com)

Try reflashing the BIOS

As stated here (www.ocforums.com)

This guy (www.techsupportforum.com) reinstalled the CPU heatsink, which seemed to fix it 		Speedy Gonzales (78)
163032 2008-04-09 23:22:00 As was indicated earlier in this thread, a BIOS ROM CHECKSUM ERROR, usually indicates the BIOS chip itself is faulty, in which case there is no simple fix, except for trying to reflash the BIOS, or possibly replacing the BIOS chip if it is a plug-in type and you are able to get the correct one. Terry Porritt (14)
163033 2008-04-10 08:08:00 Since it's the CPU executing code it has read from the BIOS ROM to calculate the checksum, another possible cause of the error is that it's not reading the (perfect?) BIOS code wrongly. ;) Overclocking might cause this, I suppose. If the ROM can't be read at a higher bus speed than intended by its manufacturer, you will naturally get errors.

It seems that one computer can sometimes read the BIOS code correctly; that is a hint in that direction.

Can you make it/them run at a "conservative" (slower) speed? 		Graham L (2)
163034 2008-05-22 22:07:00 hello,
Sorry for bringing this post back but I can still not find the answer after a long search .

I have had the same exact problem with my pc for some time now . The "BIOS ROM checksum error" pops up everytime you turn on the computer and it searches for a cd drive or floppy drive .

It is searching for a awdflash . exe program which is used to update the BIOS . Everyone else that has this problem as well can put the cd that came with there MOBO in the drive and if finds the awdflash . exe file on the cd as well as the new BIOS file to update . You can also download the awdlfash . exe file and new BIOS file from the internet and save it to floppy .

Anyways once it recognises the file it loads the AwardBIOS flash Utility and tries to update the bios file . This is as far as I get because the program freezes on the first screen and just flashes "Please Wait" for hours .

So some might think it is a corrupted BIOS file but I dont think it is if ASUS is telling the truth . I am so frustrated, I sent my motherboard to ASUS 3 times!!! The first time they updated the BIOS chip, I dont know what they did the second time, but they finally sent me a reaplacement on the third time .

I have also replaced everything trying to find the problem! New Ram (different MHZ also), new harddrive, powersupply, even the processor, new graphics card . Could ASUS lie to me 3 times? I dont know what else to do .

Also there is no way to get to another screen, cant get to POST screen or the BIOS setup program . It just gives the error message and searches for a disk .

I have built many computers and have not had this problem, one day out of the blue I just turn on the system which was working great for 6 months and this happens .
I know all my parts are compatible and connected properly .

If anyone can shed some light on this it would be much appreciated, Thanks alot . 		atanasov1 (4310)
163035 2008-05-25 17:29:00 well thanks for all the help! atanasov1 (4310)
163036 2009-02-26 15:39:00 Firstly, hello to everyone because I am new registered on this forum and must admit that I use this forum to gather informations every time when I am stuck in a problem.Thank you all for the possible solutions.

Now, I had the same problem and fortunately 90% sure that I found some of the possible solutions of "BIOS ROM Checksum error" problem. I have an old HDD Samsung 20GB attached as a secondary and combined with SATA2 HDD Hitachi. For some time the 20GB HDD was not detected by the BIOS but still worked as a secondary. Suddenly this problem appeared, I unwired it and the problem solved. Try also to check if the RAM module pins are not filled with dust, because this might be the problem too fore some of you. It doesn't mean that all the time when this message shows up, the problem is damaged BIOS. PC's are mostly stupid machines hehe. That's it 		ognen (4311)
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