Windows Vista won't boot

Dell / Dell dv051...
October 7, 2010 at 07:16:58
Specs: Windows Vista, 2.793 GHz / 2038 MB
Please ignore categories below...they come from machine I'm \since the problem laptop does not work. It's an HP dv9617nr laptop running Vista fully current. Machine is three-years-old but 250gb hard drive is new this year.

When the HP logo appears during boot, none of the function keys work except f10, which open the Pgoenix BIOS utility that resides in ROM. It shows date and time reinitialized to 0/0/2007 and does not hold any changes. The memory and disk tests "pass." Disk test takes 104 minutes so disk is recognized.

It will not boot from CD either, so my backups are no good.

If I don't press F10, the system tries to boot and shows a cursor in upper left cornet of screen for 30-90 seconds . . .then it reboots in an endless cycle.

HP suggests replacing the entire motherboard, which costs almost as much as a brand new machine. Any ideas on how to diagnose and fix?

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October 7, 2010 at 08:46:08
Sounds like you need to replace the button battery on the mb. Fairly easy on some laptops harder on others. Since your date and changes keep reseting, that's a likely source of your issues.

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October 7, 2010 at 08:46:28
"...HP suggests replacing the entire motherboard..."

... I agree with "seawatch1" I'd try replacing the cmos battery (watch type) first as it powers the bios settings.

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