bios fails

Hello, so here the thing. I did some changes in BIOS (about 4G decoding and changing MHz of Ram) and after that I got "boot failure detected". I could either reset to default or enter the bios and change settings myself. I did that second one and didn't change anything, I just exited bios. But...

Hello, i have Intel Desktop Board DH87MC it was working fine, i try in update BIOS after downloading a newer version from internet but my PC stop working after that. When i turn the pc on the power supply functioning normally but no signal on the screen. i search a lot to fix the problem and i...