- Jan 12, 2014
- 8
- 0
- 10,510
I bought a Asus H81M-C/CSM motherboard used off of ebay because it has a parallel printer port and have intentions of using it for driving a small cnc machine. Its been my experience that the h81 chipsets have pretty good latency when using linuxcnc for realtime software stepping.
My issue is i tried several Haswell cpus (pentium g3250, i3 4160, i5 4460, i5 4590s), fans run but no beap, post or display. Tried several, psus, ddr3 1600 modules without different results.
Messaged seller that board didn't work and he sent me another identical board. Same results as above
Pulled a i5 4670k out of my z97 board and tried that everything works great on both boards. Even auto overclocked it to 4.1ghz which i didn't even know was possible on h81's.
Updated the eufi to several versions that say they are compatible with all the chips above according to the asus website on both boards with the i5 4670k in socket. Still no beeps, post or display. Used several methods of updating the bios (ezflash, dos, afu, asus ai suite in windows) Still only the 4670k works.
The other chips all work in my other h81 boards as well as the z97 and i am at a loss as why they won't go in either of the asus H81M-C/CSM boards.
The seller apparently has several of these boards and theCSM suffix is for Corporate Stable Model. Is there any situation in which an i.t. guy in a business environment would have modified some firmware not touched by reflashing the eufi rom? Are both boards faulty? Roms faulty? Just throwing things out there to ponder because I am at a loss here.
The practical thing would be to ship both these boards to the trash or back to the seller for a refund but I feel i have too much time invested to quit now, lol.
Any suggestions as to what to try next would be appreciated.
My issue is i tried several Haswell cpus (pentium g3250, i3 4160, i5 4460, i5 4590s), fans run but no beap, post or display. Tried several, psus, ddr3 1600 modules without different results.
Messaged seller that board didn't work and he sent me another identical board. Same results as above
Pulled a i5 4670k out of my z97 board and tried that everything works great on both boards. Even auto overclocked it to 4.1ghz which i didn't even know was possible on h81's.
Updated the eufi to several versions that say they are compatible with all the chips above according to the asus website on both boards with the i5 4670k in socket. Still no beeps, post or display. Used several methods of updating the bios (ezflash, dos, afu, asus ai suite in windows) Still only the 4670k works.
The other chips all work in my other h81 boards as well as the z97 and i am at a loss as why they won't go in either of the asus H81M-C/CSM boards.
The seller apparently has several of these boards and theCSM suffix is for Corporate Stable Model. Is there any situation in which an i.t. guy in a business environment would have modified some firmware not touched by reflashing the eufi rom? Are both boards faulty? Roms faulty? Just throwing things out there to ponder because I am at a loss here.
The practical thing would be to ship both these boards to the trash or back to the seller for a refund but I feel i have too much time invested to quit now, lol.
Any suggestions as to what to try next would be appreciated.
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