I had a client who was having a bad checksum error on his PC, and a keboard error. A Dell XPS Studio desktop. He couldn't get to the Windows screen. He recently purchased a new motherboard (using his old Intel i7 processor) and power supply. When I placed my USB device in his computer I was able to run diagnostics and everything passed in DOS. I reinstalled Windows 8 and everything was fine.
2 weeks later, he decided to turn the machine on since the last time I was there and his fan would rev up really high, but couldn't log into windows. He kept getting 5 beeps (which mean a motherboard or BIOS issue). Again I placed the USB device in to run diagnostics. It took a while but I was able to get to the Setup to Run the computer from the USB. Once I did I noticed that in the diagnostics from the USB in DOS, it showed he has a AMD processor, not the Intel. Which I thought very strange. Everything passed again, and the computer seemed to fix itself. I was able to get into Windows. And when I ran Service Center 8, it showed that he indeed has an Intel i7 installed on his motherboard. But when I ran the USB device again through DOS, it showed he has an AMD chip.
Can someone please explain why this is happening? By the way, before I ran the diagnostics, I removed the CMOS battery and reset the CMOS using the jumper. I even switched out the CMOS battery to see maybe it as a defective battery. That didn't work either. But the issue I would like to have an answer to is why the USB in DOS shows he has an AMD processor, and when I run SC8 in Windows it shows he has an i7.
Please advise.
Thanks!