What should I do if I detect an invalid signature and can't open the HP computer?

Hello, thank you for choosing HP products.

1, please recall whether this phenomenon began to appear after a special operation, such as replacing the motherboard. If so, it is recommended that you contact your local HP Gold Service Center for handling. You can check the nearest HP Gold Service Center on the following website:/zh/support-drivers/eSupport/ascpps.html.

2. If you don't do anything special, the machine suddenly starts to appear this phenomenon. I suggest you take a picture of Zhang Zhaofa. In addition, please describe the specific model of the machine again, and then we will provide you with other suggestions.

You are welcome to feedback your operation results or questions through the questioning function, so as to continue to follow up and solve your problems. Wish you all the best!

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