Dell won't complete startup after replacing CMOS battery

December 9, 2017 at 16:20:14
Specs: Windows 7 Pro
Dell Lattitude 6520, clock stopped working, so I decided to replace cmos battery. When startup began, I get a message to reset the clock. I did that, but when it gets to the "starting window" screen, it won't go any further.
I have removed battery, held start button for 30 seconds, I even put the old battery back in. Still won't complete boot-up.
Have restarted numerous times, tried it in safe mode also. Nothing works.

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#1
December 9, 2017 at 16:55:54
When you removed and replaced/renewed the battery... all the previous bios setting were lost. Usually the system will reset to default settings, which may need a little adjustment...

When the Dell boots up, presumably there is a brief message re' which key to press to enter setup/bios settings?

Have you been in there; and have you checked the boot order?


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#2
December 9, 2017 at 21:30:24
Yes, check CPU settings, RAM settings, primary graphics settings, bootable drives and boot order as well as date, time, and anything that is not optimal.

You have to be a little bit crazy to keep you from going insane.


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#3
December 10, 2017 at 19:06:18
Yes, I can get into BIOS settings, and per something I saw in an old post, changed the SATA drive to AHCI, That did help, but still won't finish booting. What should boot order be? Now, it is HDD, USB storage, DVD, Onboard NIC.
I can get to the screen that gives system recovery options., so I tried to do "system restore", but I get a message telling me to restart and select which OS to restore. I only have Win 7 pro on the machine, and when I restart, there is nothing to allow me to select that. I have also run 'system repair" several times.

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#4
December 10, 2017 at 19:07:44
Yes, I can get into BIOS settings, and per something I saw in an old post, changed the SATA drive to AHCI, That did help, but still won't finish booting. What should boot order be? Now, it is HDD, USB storage, DVD, Onboard NIC.
I can get to the screen that gives system recovery options., so I tried to do "system restore", but I get a message telling me to restart and select which OS to restore. I only have Win 7 pro on the machine, and when I restart, there is nothing to allow me to select that. I have also run 'system repair" several times.
Thanks to all for any help!

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#5
December 11, 2017 at 02:23:09
Before going any further... Is there anything on the drive you wouldn't wish to lose; anything not duplicated safely elsewhere off the drive entirely?

If so then take steps to preserve that data before going any recovery/restore process if it's anyhthing more than a Windows simple restore point operation. A restore to as delivered (factoru reset/restore) will likely erase all data in the process, unless one is very careful. There are factory resets which allegedly preserve data, but never wise to trust that path.


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#6
December 11, 2017 at 06:15:02
I don't want to do a factory reset, but a restore point would be good, but when I try to do that, it tells me to restart and select the OS to restore. My only OS is Windows 7, and there is no option to select that on restart, so I haven't been able to do a restore.
I think the problem is probably the Bios settings going back to default, but would that keep it from booting?

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#7
December 11, 2017 at 06:49:46
Make sure that your hard drive is set as bootable. This is different than the boot order and usually in a different place. The set the boot order to CD/DVD first then HD second. If you plan on booting to a flash drive, you can put that after the optical drive.
On Windows 7 there is an option in the back up section to make a Windows 7 Repair Disk. This repair disk can perform a start up repair, a system restore, or restore a stored disk image. Assuming that you do not have a disk image handy the other two are important to you. If you did not make the repair disk already you can make one on any Windows 7 machine as long as both machines are either 32bit or both 64bit and use that to boot to. The system restore option uses the restore engine on the CD and the restore point from the hard drive. The start up repair is even simpler. Neither requires a restart until they are complete.
First I would recommend testing your memory and hard drive and both can be done from outside of Windows. Use Memtest86 from a bootable CD or flash drive to test the memory and Seatools (from Seagate) to test the hard drive (WD has a test also but it is only for their drives but seatools will work for all).
If you need to back up any of your important files first, use a Live Linux CD or DVD that you can make for free to access your hard drive and copy your files to an external drive.
If you would like more details on any of these, just ask.
https://www.memtest86.com/
https://www.seagate.com/support/dow...
https://www.linux.com/learn/5-live-...

You have to be a little bit crazy to keep you from going insane.


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#8
December 11, 2017 at 14:13:56
Thank you for the great info!

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