Hi, I am facing a problem during starting my laptop. I can not Turn ON my laptop on battery. I always need to attach the charger to the laptop (connecting with an electric source) for turning my laptop ON. Whenever I start my laptop, I get a "CMOS checksum invalid (502)" error. ...
Then, I hibernate the laptop, swap to the other (fully-charged) battery, "wake" the laptop, and continue to use it. I never get a "CMOS Checksum Error", because the laptop's "healthy" CMOS battery continues to supply "trickle" power to the CMOS. Thus, the CM...
7. After the update has finished, follow any additional on-screen instructions, and then restart your computer. Note: if a “251” or CMOS error appears after restarting, go to Error: CMOS Checksum Bad to resolve the issue. 8. If BitLocker was suspended, search Windows for “bitlocker,”...
7.After the update has finished, follow any additional on-screen instructions, and then restart your computer. Note: if a “251” or CMOS error appears after restarting, go to Error: CMOS Checksum Bad to resolve the issue. 8.If BitLocker was suspended, search Windows for “bitlocker,” the...
Whenever I'm not using my laptop for a few minutes, instead of it going into sleep, it just turns into a blue scree... 78 Views 1 Reply Last Activity:Rachel571 Oct 22, 2024 Cmos error 502 By:RogerM1953 | inDesktop Operating Systems and Recovery | Oct 19, 2024 Recently my PC...
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Note: if a “251” or CMOS error appears after restarting, go to Error: CMOS Checksum Bad to resolve the issue.8. If BitLocker was suspended, search Windows for “bitlocker,” then click Resume Protection.9. Re-enable your antivirus software.If Windows is not able to start:If you are ...
Unfortunately, every time I reboot my laptop (cold reboot, not restart) I get the following error message: CMOS Checksum Invalid and CMOS Reset 502. My laptop then reboots again and it's fine.Is this because I removed the battery since it was fine before? I've performed all diagno...
I have recently replaced my batter and after that whenever I press the power button it doesn't go on, I will have to connect the charger then I will hear small beeb then get this black screen with this error "the cmos checksum is invalid, Cmos reset 502" When I reboot th...
while booting shows CMOS checksum is invalid CMOS Reset (502) restarted the laptop and now works normally. Though laptop works normally, is there any reason to worry about it? The error didn't show up again. Tags: HP Pavilion - 15-cs3006tx Microsoft Windows 11 View...