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Notebooks & Personal Computers Notebook, Personal Computer - repair, disassemble guides, drivers, bios pasword, and problems with pc.

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Old 06-14-2016, 16:27   #1 (permalink)
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Lenovo ThinkPad T450s BIOS (help needed)


When I press the power button on my Lenovo T450s I get two errors:
0271: Check Date and Time settings
0251: Check CMOS Checksum bad - Default configuration used
Press Esc to continue or F1 to enter Setup

After I press Enter there is a password entry screen to access the BIOS. If I just press Enter I can enter BIOS but many options in BIOS are disabled. I remember my HD password but I can't remember the BIOS password and I lost the papers that came with the laptop.
Anybody here have any suggestions/ideas/advice what I can do to recover/reset the BIOS password?
Any help would be greatly appreciated.
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Old 06-24-2016, 15:30   #2 (permalink)
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- remember the pass
- replace the whole motherboard
- find a local 3th party service center and pay for the removing
- disassemble the notebook, desolder the bios flash or the bios stroage eep, dump it and find your pass hash, brute force or delete (chks recalculation need)
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Old 06-25-2016, 01:04   #3 (permalink)
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Bro change CMOS BATTERY
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Old 06-27-2016, 20:16   #4 (permalink)
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Quote:
Originally Posted by Shaagul View Post
Bro change CMOS BATTERY
yeah
after that pls tell me how can you enter the bios without password. And i almost forgot this one little buddy here
Code:
0251: Check CMOS Checksum bad - Default configuration used
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