I have a PC OptiPlex 6X620. I did not add any software and 3 days ago was working fine. Now at start I get the error PXE-E01: Unsupported PCI Device. Press Ctl-S. I did but nothing happened, I try F-12 and F-2 nothing. I see the talk about battery, but I do not know what to do, Anybody have an idea.
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