I am Pete, a computer expert, and I'll be happy to assist with your laptop question.
Can you please let me know:
1. What is the make and model number of your laptop?
2. Approximately how old is it?
3. What version of Windows is installed on it?
4. Can you give some examples of the exact security warning messages you are getting?
5. What antivirus software are you using?
6. Has the laptop ever suffered from a virus or malware infection?
7. What is your level of experience in computers? (basic, intermediate, advanced)
8. What date and time does it reset to? 9. Does it reset to the same date and time each time it resets, or does it vary?
10. Any other relevant info?
1. What is the make and model number of your laptop? Acer Aspire 8920
2. Approximately how old is it? App 5 years
3. What version of Windows is installed on it? Windows Vist Home Premium with SP2
4. Can you give some examples of the exact security warning messages you are getting? The only security warnings I get are when I am on the internet. It's not all sites either. Once I've added the security exception there's usually no problems
5. What antivirus software are you using? Avast (full programme)
6. Has the laptop ever suffered from a virus or malware infection? Not that I know of
7. What is your level of experience in computers? (basic, intermediate, advanced) Intermediate
8. What date and time does it reset to? 00.00, 20069. Does it reset to the same date and time each time it resets, or does it vary? It varies. Either 2006, but occasionally will just be at the time it was set to when I turned the laptop off
Thanks for the additional info, that helps a lot!
I have seen this problem many times on older computers and laptops.
You may have seen some of the following error codes appear immediately after turning on the laptop:
0250: systems battery error 0251: System CMOS checksum bad 0260: System Timer error 0270: Real-Time Clock Error
The problem is related to the CMOS battery inside the laptop, and it is no longer able to hold enough charge over a long period of time. That is also why the time will not reset if you turn the laptop on again soon after turning it off.
When the battery no longer functions, the computer does not remember the current date and time and defaults to the original date programmed in the BIOS.
To fix this problem, the CMOS battery will need to be replaced inside the laptop.
The laptop will need to be disassembled to reach the battery and replace it.
You can get a replacement battery from eBay or another website:
Thanks so much for your help. I'll order a new one immediately.
Am I able to log back in to Just Answer at a later date to submit my rating? I'm sure you'll understand I just want to check whether this solves the problem before I pay.
Yes, you can return again to this page at any time - just save it to your Favourites:
You can also ask free followup questions even after rating my service :)
You will just need to be able to access the battery inside the laptop, so a small star-shaped screwdriver should do the trick!
Hi Laura,Just checking if you need any further assistance with this?Let me know,