Question about Computers & Internet
Laptop will not start (no bios screen) unless I remove and then reinsert cmos battery, once this is done it starts as normal but when it's shut down it will not restart and I have to repeat the procedure to get it started again?
Follow these steps & ur issue might get resolved(80% chances):
turn off ur notebook-->take out the laptop battery(not the cmos battery)-->disconnect the charger if its connected to the notebook-->now press & hold the power key for atleast 20 seconds, remember that u have to press & hold the power key & dont release the power key till 20 seconds are over--> & ensure that the notebook is not connected to any power source while u r performing this step niether the battery nor the charger--> also there shouldn't be any peripherals connected to the notebook-->once 20 seconds are over & u have released the power key-->connect the battery & the charger back to the notebook & now try to turn on the notebook-->u might not get a blank screen & ur issue might get resolved, turn off ur notebook again & restart to ensure that its not reoccuring....(This whole step is known as power drain & it is done to remove the extra static electricity which sometimes get stored in the notebook & gives a blank screen in return.)
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
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Aug 04, 2011 | Computers & Internet
Feb 25, 2011 | Lenovo ThinkPad R61 Notebook
Remove a small coin sized CMOS battery to store all BIOS settings along with the password. To reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15-30 minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings.
Under the keyboard or bottom of laptop - If you are working on a laptop computerthe location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.
If it fails, then try to remove the battery for at least one hour.
hope this helps
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