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thinkpad（E420）进不了电脑系统，进不了PE系统。卡住logo不动。
thinkpad（E420）进不了电脑系统，进不了PE系统。卡住logo不动。 测试硬盘，内存条等一系列，最后排查笔记本键盘问题，拆掉键盘⌨️排线。可以进入PE系统。重装系统，正常进入电脑系统。2023.6.17
电脑组装维修打印机维修监控LED显示屏安装网络维护软电工程2025101/353
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