cmos batery change-pc won't start

August 17, 2010 at 15:06:07
Specs: Windows 7
My onboard LAN port was crashed. Also from some month ago when I start PC show these messages Flopy failed... Pres F1 to continue, and in Windows change my date to 2007.

I buy a new PCI LAN card and a new cmos battery. And I have put in same time two components. When I power on pc, nothing is displayed in monitor. Fans work. Hdd light all time display. DVD-rom all time make some trying to read.

I change cmos jumper pin for about 1-2 hours to clear cmos and replace to default, and the PC start, but with messages: Pres f1 to continue, and changed date. I work some time, I installed driver for LAN card who work ok, and power off pc. After 2-3 hours when I try to power on again the pc wont start, same issue.
When I remove at all the cmos jumper, pc starts but with some erros (press f1, lan card is not detected, wrong date, etc.)

Please help me to start PC with all hardware detected.

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August 17, 2010 at 15:11:52
First thing that comes to mind is that you put the battery in the wrong way round. Normally thy fir with the + side uppermost - what appears to be upside down.


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August 17, 2010 at 16:29:18
:) No. I put the battery correctly

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August 17, 2010 at 17:02:07
"I change cmos jumper pin for about 1-2 hours to clear cmos"

2 hours? The BIOS will reset in 2 seconds if you do it right. Did you have the power cord unplugged before you moved the jumper?

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Related Solutions

January 2, 2011 at 17:48:19
did you ground youself before installing them if you didnt you might have fried your system.
always wear a metal watch or something conductive when building repairing computer will help in the long run but.
id try to remove all components and restart from scratch to see if and what is the problem

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January 2, 2011 at 17:49:53
there is only one way to put in the batteries most of the time since they are notched at the top of it but might be a way to force it in upside down.

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