I just purchased a used HP z820 workstation that had the hard drive wiped before purchasing. I also purchased along with it a Windows 7 OEM installation disk. When I went to install Windows 7, Windows would not recognize the local drive, a 256 GB SSD.
I pulled the hard drive out and connected it to my old computer, found out it was not formatted NTFS using "Computer Management," reformatted it, and got it to show up as a clean drive, totally empty, in Windows Explorer. I then reinstalled the SSD in the HP z820 box, and tried to install Windows 7 again. Windows would still not recognize the drive.
In "system setup" while trying to locate the drive, which wasn't showing up there either, I got a strange blue screen asking for a password to continue setting-up options, it asked for 1504 + enter. I did just that, shut down the system, and after that, the monitor will not turn on.
I read how to reset the CMOS (which I did). No luck.
I removed the motherboard battery, which was supposed to reset the BIOS. No luck.
I followed the steps in the HP z820 user manual to reset the password jumper. No luck.
I feared motherboard failure. I removed all the RAM modules, video card, optical drive, and hard drive, and powered on the system. As I expected, I got five one-second red light flashes, with a two second pause afterwards. That is supposed to indicate a "Pre-video memory error." Options given to fix it are to replace/reseat DIMMs, or contact HP regarding motherboard failure. I replaced one DIMM module for each CPU (there are two), and rebooted the system. The power light stayed blue, like it is supposed to, but still nothing on the monitor. I contacted HP; the motherboard is out of warranty, and they wouldn't talk to me unless I paid, which I suspected.
When I started, all components were viable parts; I have not noticed any damage to parts during my working on the system. I am now WAY over my depth, so am hoping someone here will have some ideas. Thanks for reading!
Edited by hamluis, 17 August 2017 - 04:05 AM.
Moved from System Building to Internal Hardware - Hamluis.