Dear G. W.1150!
Welcome to the Microsoft Community!
I understand that your Lenovo laptop has a blue screen problem after uninstalling Ashampoo Backupper. However, we do need more details to accurately diagnose the problem. Let's take a closer look:
- Entering BIOS:
Many Lenovo laptops do use the Enter key to enter the BIOS. Have you tried pressing the Enter key immediately when booting up? If not, please try that.
- Blue screen error code:
You mentioned that your computer has a blue screen. A blue screen usually displays an error code or error message. Can you tell me the specific error code or message displayed on the blue screen? This information is very important to determine the root cause of the problem. You can also upload it after taking a photo with your mobile phone.
- Other information during the boot process:
When the computer cannot boot, are there any other error messages or prompts displayed on the screen? For example, "No bootable device found" or similar information?
- USB boot:
You mentioned that the boot button of USB BOOT has been activated, but nothing happens. May I ask:
-Have you prepared a bootable USB device (such as a Windows installation disk or system repair disk)?
-Is the USB device correctly recognized? (If you can get into the BIOS, you should be able to see it there)
- Previous actions:
You mentioned that you had problems installing Ashampoo Backupper. Did everything work fine on your computer before this? Have you made any other important updates or changes?
With this information, we can better determine the nature of the problem, whether it is a software problem (such as corrupted system files) or a hardware problem (such as a failed hard drive). Based on your answers, we can provide a more targeted solution.
Providing this additional information will greatly help us determine the root cause of the problem and find an appropriate solution.
Thank you for your understanding and support!
Best regards,
Yang.Z - MSFT | Microsoft Community Support Specialist