Laptop is constantly back to 2009, what is it?

For about 3 months, my laptop is reset after each switch to the 01.01.2009. Every time you have to enter the current date and time and everything works as it should. In between times was 14 Tg. Rest - so the current date / time was when Eischalten there. Can someone tell me what the reason is?

Even with laptops is a small battery on the motherboard, the u. A. Responsible for powering the internal clock. And even these batteries can eventually give up their mind and must then be replaced.

This is because the motherboard battery (a button cell) is empty, supplying the CMOS chip for the BIOS. Only costs a few euro, but you have to take apart the Schleppi for it

Oh, if I can do it? But thanks!

This sounds very much like the battery of the BIOS / UEFI is empty. In this case, the BIOS can no longer remember its settings and the clock stops running - but resets to a default value. The part is a button cell (mostly CR2032), which, if you can trust it, can change itself (the laptop probably has no guarantee anyway). If you can't believe it, you can also have it done in a specialist shop. That should not be expensive, but you should of course ask for the price before.

I the one size for laptops or there are different sizes?

Thank you for the info!

Comes on your laptop. Some can be disassembled with a few screws, others need a bit of tact. In popular models, you often find a clip on youtube that shows you how to get the thing up

If you are unlucky it is soldered. If you are even more unlucky, it is a battery that is soldered directly to the motherboard. And if you are unlucky it is a defective capacitor soldered.

Normally, however, is a small button cell with recording on the motherboard is not the same in all notebooks… So open up, look and run after the right, for example, the watchmaker and swap.

The battery is called CR2025 for laptops. The CR2032 is for desktop PCs

It is not always possible to get to the battery and find the motherboard on the laptop. Sometimes it is necessary to disassemble the whole laptop. This should be done by a specialist company, if you do not know it.

Either it is very easy and you see the battery when opening the flap under the notebook (often secured with screws) or you have to disassemble the half laptop. The latter should then better make a specialist company (depends only on whether this is (still) worthwhile for labor costs)

The battery is called CR2025 for laptops. The CR2032 is for desktop PCs.
However, it may not be easy to get at them.

most laptops have a service flap underneath, secured with screws. If you're lucky, the battery is accessible there too. Otherwise, only the disassembly of half of the laptop, which then better performs a specialist company.

But it is questionable whether the cost is worth it, depending on the age and residual value of the laptop

Yes, you are probably right. But if you do not get to the BIOS battery without effort you have to consider what a "professional" wants to have fun… The device should now be quite old.

So today I screwed the lapi and have this kl. Button cell also discovered the same, hope that there's only one in it. Have they taken rough (was not soldered), and I'm to Medi Max. Is a CR 1220 button cell, they have used again and hope that the spit is over tomorrow when I start it again.

All a dear Thank you! LG

Awesome! Well done.

Yes, I'm really proud (am 79y.), Because it worked - today everything is paletti again!