It does not cycle back to the bios.ĭesktops will cycle back (lose settings) if the power is removed or interrupted in the case of a dead CMOS battery. I have seen many times a dead cmos battery in a desktopĪnd it operates normaly after you enter the bios and make the proper setup. Generally I cannot understand why a broken cmos battery would have an effect like this to the boot. I think this would be a good indication if the cmos battery is ok or dead. I am thinking to remove the laptop' s battery and connect only the charger in order to see if the cmos data like date and time will be It also holds any changes I made, for example I changed the boot sequence puting the cdrom as first boot device. Dust causes heat buildup & retention, acting as an insulator & is the eventual destroyer of many electronic devices, including computers, notebooks more so than tower PC's, due to the cramped space.Įdited by cat1092, 07 June 2014 - 01:19 PM.ĭoes the BIOS detect a hard drive present? It will run much cooler upon doing so, prolonging the life of it by possibly several years.
Normally I wouldn't suggest this over a CMOS battery replacement, but since it's going to be apart anyway, may as well do so. This includes the cleaning of the heatsink & CPU surface & re-applying a thin amount of quality thermal paste.
If so & you wish to proceed, it would be best to take this time to clean up the internal of the notebook really good. The real work here is getting to the battery, the few sources I've found indicates that a teardown is needed. It may be best to remove & verify before purchase. WalMart has them in packs of 2 for less than $5. These are also likely available at Radio Shack, but may cost more.
Here is the removal procedure, on page 91 (2-61), PDF Reader required.įrom what I can find, it seems to be the common CR2032 battery, available at may retailers, such as WalMart (best pricing) or pharmacies where batteries are stocked. Once these eventually dies, the settings won't be retained, including the hardware clock. Installing a new CMOS battery fixed the issue. I've had this same issue with older Dell notebooks & one PC.
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