Hello,
most probably, I've got corrupted Bios on my motherboard, so I'd like to get there a new one. Board is Asus M4A78T-e.

Thanks.

are you sure your bios battery is ok. should measure 3 volts.this can cause serious errors for obvious reasons, bab

Thanks for reply.. well, my computer starts, but instead of post, only black screen appears. No beeps, computer doesn't react on keys, taking out all RAM modules, I can't turn on and off numlock, etc. Battery should be ok, at least my pc worked untill I installed new RAM. Now it does not work even with old ones.

try looking on the motherboard for a small(dil) switch which should say: reset cmos. it will not clear the bios ,but reset it. Try this after replacing your old memory in case it is the new memory that's faulty.Then try a reboot. I have one of those mb's around somewhere and I remember a similar fault. take care though!! Another alternative is to reflash the bios with a copy of the same or updated bios for that board.Their is method of doing this via the floppy(if you still have one)

Thanks for reply,done it several times, does not work at all, though.

Any useful info here?

http://www.tomshardware.co.uk/forum/283530-12-revert-older-bios-asus-m4a78t

So far, there seems to be nothing useful at all, because they are talking about EZ flash, which is accessible from BIOS. (no post, no bios).

Ok, I've made it to another step. Got working floppy drive, working media. Formated it, made it startable. But, there is problem. BIOS is about 1MB size, DOS files are about another MB. Disk size is 1.44 MB. Is there a way to compress something, or any other way to do it.

I am looking or older ROMs now, maybe they'll be little smaller. Thanks.

depends on how new the machine is, more modern bioses are often divided into two parts, the actual bios and a 'boot loader' which isn't affected by the flash, this may contain enough code to read the bios image off a floppy drive, in this case an OS isn't needed on the floppy disk, just the bios image, though there may be a jumper on the motherboard that needs to be set in order to activate this feature, i've done this before to force flash a stock firmware onto a motherboard instead of an OEM proprietary version of the bios for the same board

The method with the DOS-disk will not be successful, if you have no POST. Have you tried the Crash Free BIOS function, yet, as described in your manual under point 3.2.4?

I think easy flash is available through updates or asus cd. I'll check documentation for my board and post back.
Oops I forgot cd is most likely wins only

Frieza: I'll take a look on it.
TobiSGD: My tryings were not needed oh. Does not work now anyway. I'll check CrashFree again just for sure, but as far as I remember, it was about sticking support DVD into cdrom and USB key, didn't work for me.
EDDY1: It's not problem to get Win on that computer actually. But easy flash should work only with BIOS working, and I have it corrupted, so I guess its not the way.

Thanks for your replies. I'll read my board's documentation once again.

Frieza: looks like there is no jumper or changable thing for this stuff. Nothing at all. Just checked the manual again. I am not sure if my BIOS is divided or not, got M4A78T-E motherboard, and Bios, well, as far as I remember, it was supposed to be American Megatrends BIOS.
TobiSGD: CrashFree seems to use support DVD (I beleive it's one that was shipped with motherboard) or USB. I have CD-ROM connected, it should be working. Inserted there support DVD, but nothing happens at all. (Monitor keeps itself in standby mode without any signal, no beeps). Tried the same thing with USB, nothing again. Perhaps I made mistake somewhere, so I'll do it again.
EDDY1: Asus Easy flash is turned on during post test (alt f2) or from bios, while I can't access either one of them. I'll try ALT plus F2 option, just in case.

Thanks for any help. (Giving it some humour, although it's not funny at all: well, I was planning to get a new computer, but not that soon, really.)

EDIT: Noticed something. Computer is responsive for restart button, pressing it is followed by flashing of CD-ROM LED. (Could that mean it's trying to read from it, or sometihng?)

No, that is a standard behavior, if you press the reset-button the drive is also getting a reset-signal.

So let's resume one time: You bought a new RAM-stick, but after you replaced your old ones with it, your computer hung at different times. So you changed your old RAMs back into the machine, and since then it is not working anymore.
So we need to know what happened at the last change. Lets go through some options:

• You assume that your BIOS is borked. There is nothing that we can do with that at the moment. To rewrite it we would need a new BIOS chip to do a "Hot-Swap-Rewrite", because the Crash-Free-thing is not working.
• Next option, maybe the "damage" to your board is physically. Look for bend pins that may cause a short circuit, or you have accidently removed a jumper from the board, search your case for it. Or maybe one of the cables in your case is not sticking to its place correctly anymore. Reseat all your cables.
• Maybe it is a coincidencal issue, remove all expansion cards and cables that are not necessary for a running system, such as any drive, audio-cards, USB-keys, just anything, except one RAM-stick, the CPU and its heatsink/fan.

TobiSGD: Thanks for your reply.

Yeah I did exactly how you said, except I swaped them few times. Also, fact that reallz could matter, is that I changed some BIOS setting, while it did not hang (or old ones were in, and then I inserted new RAM). I can't remember what exactly I did, but I was viewing overclocking settings, set overclocking to manual, but nothing "big" at all. Another reason why I think it's in BIOS.

1. Getting new BIOS chip would be kinda painful for me, it's not that easy to get things like new BIOS chips in here. That's why I am trying to solve problem by flashing BIOS with current specs. (I would like to know how to solve such a situation without buying too).
2. I'll do it, and write back results then. (Though I am not sure if it will be right away, it's 00:47 am in here)
3. Ok, I'll try that one too.

Thanks for your help.

It is never a good idea to change anything in the BIOS, if you don't know what you are doing. Since you have resetted the BIOS, but the computer is not working anymore, there are chances that you have physically damaged in your system with this changing. This is always possible with changing settings, especially if they are OC-settings. Not all board manufacturers give sane default settings to them, if you change overclocking to manual.

So we have to keep in mind, that it is possible that you just fried a piece of your hardware.