- Dec 21, 2015
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So had my HP z240 work station up and running fine. I had installed my standard set if utilities and programs I install on all my systems. I did some basic tasks, some transcoding, some files transfer etc. When I first set it up it had problems booting so I replaced the CMOS battery and reset the BIOS boot priority and everything was working. I usually leave it on and let it go into sleep mode but I shut it down since I knew I wasn't going to use it for a few days. I booted it up and it hung at the HP start screen. None of the start up f keys worked. I couldn't get into BIOS or into any diagnostics, it just hung. It was behaving like it did before I replaced the battery so I put another one in and reset the CMOS. Booted and was able to get into BIOS reset everything again and it booted fine. I did some more basic tasks file copying and web surfing and it ran fine. I shut it down and rebooted and back to the same hang at the HP Secured by HP Sure Start logo screen. This time when I powered it on the case fan was running at full rpms. So where do I start? I was thinking reset the CPU with new thermal compound? Maybe it is over heating though I would assume it would have given me problems when it was running.