so I decided to have a look at the CPU voltages on startup as piernov suggests I then put the reprogrammed BIOS back in the motherboard and it was behaving exactly the same as before. So I'm a bit confused how the contents changed apparently by unsoldering and resoldering. I then decided to write the downloaded BIOS file anyway, and that also programmed and verified OK. I wrote the original backup and it verified OK. I read it again and compared with my original backup some areas had changed! I took a third backup and that was identical to backup number 2. They were very similar in structure but different.Īs I am not sure that is the correct BIOS file I then unsoldered the BIOS and was going to put it back on the motherboard, but had a change of heart and soldered it back to the SOP8 header. I made a backup of the eprom BIN file and compared it with a downloaded BIOS which I think is the right one for this motherboard as it appears to be an OEM item used in various computers I could also use the clip lead to connect to the chip once it was soldered to the pin header PCB and read the BIOS properly. I could then read the eprom properly, which Check ID ticked.
So I soldered it to the SOP8 pin header instead. OK, so I tried cleaning the pins on the eprom with an emery board (well that's what the missus calls the things she files her nails with, anyway) but I still couldn't get a good contact on the clip So if I am not making some newbie error then there appears to be a problem with the BIOS chip When I read it with Check ID deselected, it reads and produces a 2Mb BIN file but it is mostly FF with small blocks of data, and if I read it again I get slightly different BIN files When I try to read it, everytime i get a different ID code, example 0x When i tried using the clip to read the Eprom on the motherboard it just said 'Current Protection' though I don't see any shorts form the Eprom pins to ground on my multimeter.Īnyway I unsoldered it and found I could get my clip to hold it tightly even though not mounted to a PCB (see pic) OK there seems to be something wrong with the BIOS chip. The pins are fine, on my I'll use those sections in future - I took the Forum headings too literally but I can look under the clamp as you suggest. I don't have the kit to remove/change CPU sockets - Yet. There are 4 header pins right near the IT8721F but two of those pins connect to ground so that can't be what I need, and I couldn't find a datasheet nor any info in the motherboard yes I had wondered about the rust on the CPU clamp I assume I can use an exterrnal SPI programmer but how do I connect that? I found some tutorials for that on youtube but from what that taught me i need to know where to connect CS, MOSI, MISO and SCLK.
H57H AM2 MBSDW07002018016419100 HOW TO
I did wonder if this is a BIOS problem as I have seen boards powering up but acting 'dead' with a corrupted BIOS, but I don't know how to program the BIOS as it appears to be embedded in the Super IO chip IT8721F. I don't have another LGA1156 CPU or motherboard here at the moment to prove if the CPU is any good The first figure is with no CPU fitted and the second is with the i5 CPU The attached image shows what voltages I am getting. What I have found is that the CPU voltage seems unusually low (unless I just need more experience to determine that is true) Also the CPU does not get warm with the heatsink fitted and without the heatsink it just heats up very slowly The board is basically dead - the fan spins but it doesn't beep or POST (00 on post diagnostic card), testing just with a bare board+CPU I have this H57H-AM2 V2.0 motherboard here, I'm trying to fix it to improve my own knowledge.
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